In my mind, a Superpower can project power anywhere in the world at several places at once without putting strain on the country. A Global/World Power can potentially project power across most of the world, but it would be more difficult for them to do so. A regional power can project power in their region, or if they work together they can project more power. Some of those countries are regional powers, small regional powers at that too.
Power - Regional influence
Superpower - Global Influence
Not 100% sure where global power would fit in but its less than superpower and greater than regional power. China & Russia are both currently global powers, possibly the UK, too. The US is the (temporary?) sole superpower. India for example is currently a regional power.
There are lots of Powers in the world, their is only one Superpower currently.
Pre WWI, Britian was a superpower. France, Germany, and the US were on the verge.
Between the Wars it was Britian and France but Britian and both were rapidly falling.
Post WWII, it was the US and Soviets
Then in 1989 the Soviets collapsed
Now there is only the US.
China is on the verge right now and is looking to get over the hump.
Britian is still on the verge but is definitely below superpower. They have some international influence but its not at superpower level. There is no political will in Britian to attempt to get back their either.
Before the 19th century it was Britian and France and before those two there was Spain.
Spain was the first superpower, they were shortly joined by the Dutch, who used trade to influence everyone for a time.
No superpowers before Spain because there was no global trade or transit
Portugal while a great power, was quickly supplanted by Spain when they fell into a personal union, uniting the crowns of Iberia. Beginning their long decline.
Portugal wasn't really a superpower.
- Today, Russia is one of the few debt-free nations in the world, is consolidating its influence over the CIS and other former Soviet republics, and has a world-class military with little power projection but still orders of magnitude more than what it had twenty years ago. Military wise- America and Russia. Only 2 countries that will send troops to foreign battles on their own (no coalitions). France has been doing this for decades. (They also have the third largest nuclear arsenal.) Economically- America and China. European Union would be here if they were more united in their foreign policy. Nowadays, our world is becoming increasingly multipolar. With the example of Russia, they have a niche of military and cybersecurity in which they project their power, and this is generally the most visible to the public, compared to a country like Germany that asserts its power through political means and by financial dominance of the EU. Russia is a declining power. Like Britain after the world wars, Russia is settling down from superpower status to great power, or perhaps even middle power status. A large, nuclear backed military, sizable economy, access to vast resources, and an incredibly large expanse of land all help Russia hold on to great power status.
- Despite of 30 years recessive or stagnant economy, Japan still have 3rd economical power(even 2nd until 2010) with resource-independent comprehensive industrial structure. This economical capacity and relative stability made Japanese yen as global currency in the world, par with Chinese yuan, EU Euro and UK pound(of course not the level of US dollars). Moreover, Japanese softpower such as anime&manga, game, country reputation is still great. However, when it comes to geopolitics, Japanese has been relatively silent and less powerful country. Military strength is constrained by constitutions, though that are being changed. Japan is expanding its military links throughout the region. We know that Japanese navy ships have made port-of-call trips to Brunei and Singapore. Japan does not field nuclear weapons and has a small army. However it does have a number of "helicopter destroyers" as a concession to its Constitution that are functionally mini aircraft carriers due to their potential to launch F35s and other advanced weapon systems one would expect from a carrier. It also commissions a pretty sizeable force of submarines and advanced naval forces, along with a sizeable cutting edge air force. They are indeed not "moving much" owing to their current position under the American protective umbrella militarily and due to the Constitution needing to be worked around, but the capabilities are there. https://nationalinterest.org/blog/b...copter-destroyers-code-aircraft-carrier-90416
It contains a large and highly educated population (even if the demographics are horrid), is at the forefront in many fields, and fields a navy and air force that, while limited in size, is probably comparable in effectiveness to anybody outside of the US, China, and Russia. Many nations of the Asia-Pac region are willing to accept Japanese cash but not a show or display of Japanese military power. The Japanese-American Alliance or the status of technically still being occupied by the America render Japan unable to make independent foreign policies. Japan is barely there due to suppressed military potential, but they could develop real military power in just a couple years if their mindset changed.
https://www.globalfirepower.com/country-military-strength-detail.asp?country_id=japan
Additionally, it is worth noting that Japan possesses enough plutonium such that if it were to seek nuclear weapons, it could have the second or third largest arsenal on Earth, likely limited only by their means of deployment and manufacturing time. It processes advanced knowledge and enough working materials for it's reactors that a weapon would be on the order of months should it feel the need to do so. Large population with low poverty rate and strong technological sector. Japan has a comparatively weak military and political power, however it's lead in the above three areas is enough to keep it ahead of countries like France and the UK, which have strong militaries but aren't as economically strong. Germany is in a similar position to Japan, with smaller edges in those areas. Incredibly influential culture, a vibrant (though stagnant) economy, and geostrategic importance.
- The Netherlands is a financial powerhouse and has strong political alliances. Israel has an incredible military and is technologically advanced. Israel isn't irrelevant in regards to economics or culture, but its power primarily stems from its military.
- Saudi Arabia and Iran are not "global/world powers" SA and Iran both have immense petro carbon wealth to fuel geo political activities (Irans economy has been devastated by US sanctions, otherwise they could be in a similar position to SA, using pure wealth to project power). You've just described a regional power. Do either of those nations have tremendous influence over North/South America? East and South East Asia? Western, Central, Northern, Southern or Eastern Europe? Or even across Africa? It's parts of North Africa and the Middle East at best. KSA can't even project power into Jemen and Pakistan would've problems projecting within. KSA having military trouble in yemen doesn't mean that they don't dominate the Gulf (GCC) , have influence in some of the Muslim world due to money power (distribution) and stewardship of Mecca and a few other holy places, and have oil and money power elsewhere. They certainly have power to disrupt yemen significantly. The KSA is projecting power into Yemen. The limits of their projection are clear. However the project is clearly inside Yemen. A pair of regional powers. That's it. If they had extensive influence across the globe THEN I'd call them a "global/world power". Leading oil producer, center of the Muslim world, massive exporter of conservative Muslim ideology, sizable military capability, diversifying economy.
- At least South Korea has a better case than Turkey, Iran, Brazil or SA. South Korea rules the semiconductor trade and Samsung is one of only three foundries that can produce 7nm semiconductors and for mobile phones there literally is just them and TSMC. Semiconductor trade is so hard to do and so complex that even China been trying for years to acquire this technology and didnt succeed. Also SK control the worlds NAND and memory chips since the most advanced memory chips are from Samsung, SK Hynix, and Micron and Samsung and SK are Korean. Australia and Canada population is smaller than SK and does not have the advanced, critical manufacturing capability possessed by South Korea. As to Brazil, Australia, and Canada, they are all commodity based economies. Canada does have vast economic resources, advanced economy, good relations with numerous other states. South Korea is a technological based economy. Apart from semiconductors SK also has developed a very impressive military technology such as the K2 Black Panther which is considered to be one of the most sophisticated tanks on the world. Currently experiencing an economic boom, home to numerous multinational corporations, has a growing cultural footprint.
- A Reunified Korea could very well become a great power. Combining the expertise, technology and capital of the South with the cheap labor pool and natural resources of the north could be a recipe for an economic powerhouse. Goldman Sachs estimated that a Reunified Korea would be the third or fourth largest economy in the world by 2050, depending on where India was. And South Korea is already an economic and military power in its own right. This is all assuming reunification happens relatively peacefully relatively soon, which is not a guaranteed
- India in particular is interesting. It could either become another China or another Brazil. China has more international influence, I am not saying India is not an economic power, with great regional influence but people in south america and west Africa probably don't put much consideration into what India is doing. However they may consider what China is doing. China is in early talks of building a competitor to the panama canal through Nicaragua for example. Why is India above Japan? India GDP for 2015 was 2073B, while Japan was 4123B. Military wise, both countries do not project much influences to the globe. Neither country could invade the other. Soft power wise, Japan is leading more than India is leading, in terms of business models, company structures etc. Sure, no one is going to change their mind on major stuff because of Pokemons, but it is nevertheless an advantage over India. India has more nations supporting it's ascension as permanent member in UN security council than Japan, even with Japan's generousity. Apparently having 1/5 of the world's population and one of the oldest civilizations and top 10 economy is sufficient to override Japan's deep money bags. Oh, also India is dominant in a significant chunk of Asia, whereas Japan needs foreign protection to remain safe. Soft power wise, Japan is more modern and ahead of India in terms of living standards. Too many domestic issues, but huge potential. It's near major chokepoints for maritime trade, it has around five times the population, and it has the second largest body of English speakers in the world. I'd say that India has a lot of internal issues and is too multi-ethnic (even though most western perspectives see Indians as a homogeneous bloc) and the legacy of the caste system still pervades everything. Regional and domestic issues will rock india long before they are able to become a superpower, too many different people all with different goals. Neither Nigeria nor India have really been able to capitalise on their large populations. Other countries with much smaller populations have much greater global relevance. Booming economy and population, nuclear weapons state, prime location in the Indian Ocean. India's cultural impact on the globe is growing as well.
- Brazil, Italy, Indonesia, don't have strong enough economies (or the political unity) to commit to any kind of foreign intervention. Italy and Indonesia are also so outmatched by local powers, Indonesia will never be able to pursue anti China or anti US policies openly, the same with Italy in regards to northern European states/Turkey. If Indonesia or Italy existed in sub Saharan Africa, sure they could dominate the region, but where you are matters just as much as anything in geopolitics. Italy has an incredible cultural impact, large economy, sizable population. Brazil was doing well, but fell back a bit. They also have the land mass, and the population will grow. The Socio-cultural/Economic factors are complex. Brazil is the country of the future and it always will be. It's tongue-in-cheek - hence "always will be." Also Australia and Canada don't have sufficient concentration of very critical mineral deposits like Rhenium, Chromium, cobalt to control world supply. Brazil funny enuf has niobium which produces 90 percent of the world niobium hence making them influential in global trade. I think that Brazil as a regional hegemon over Latin America is plausible, but I don't see Brazil-as-world-superpower coming to fruition in our lifetimes. Brazil is regressing to the state of playground for the rich. South Africa is on its way of becoming a failed state. Large population, incredibly large access to natural resources, growing economy. Brazil only has a large market with good resources but its population is aging and its pension system is pretty broken.
- Australia, at least geopolitically, is just an extension of the US. Australia simply doesn't have the population to defend its massive size and vulnerable sea routes, so they will always exist under the wing of a superpower who can protect them in exchange for following the super powers agenda. AU will always exist as a client state of someone, Britain in the past, now US, possibly China in the future. Economic hub for the Southeast Asia and the South Pacific, anglophone, advanced economy, massive immigrant attractor.
- How is Germany a world power, they barely have a military. German forces as they stand today are under-equipped but could be fixed easily and they're not undertrained in any way. There is no political will though. Germany definitely has the tech and manufacturing base. They are investing money and modernization isn't the problem, procurement and maintenance are the problem. Germany rised it's budget over 10 billion € since 2014 and fields very modern equipment. Problem is mostly making the modern equipment, like IFV PUMA, A400M, etc. Or the long time needed for upgrading the Leopard to A7V. In Land system, the UK would be even more a problem as their MBT and IFV weren't upgraded that often. Older equipment like the Tornado has thankfully found replacement. And I don't think the current and future leadership is ready to invest the money. The more advance the tech, more expensive and time consuming it is to build it. No one is expecting Germany to field an armed force as big as the US. But it's current state is simply inadequate. The current state is mostly due bad saving options and Bureaucracy. Biggest economy in Europe, fourth biggest economy in the world, third biggest exporter in the world. Power is not only about military. Pretty similar position as Japan, actually. They also have a lot of influence within the EU and in their partnership with France. Stop falling for shallow Power = Big Military assumptions. You can project power using economics too.
- The UK and France are firmly great powers, at least whilst we have nukes. The UK-less relevant each decade/nuclear weapons, UNSC seat and historical ties what matters. France's armed forces and budget are very similar to Germany's, yet they are able to maintain a strong overseas presence as well as a nuclear program. Their titles to Great power will be nominal claim from their historical legacy as colonial empires and outdated UNSC permanent seats from post-WW2, which won't change without a WW3 to alter the structure of international order. France is a stable great power. Being the host nation of Europe's space program (French Guiana in South America is home to Europe's main space port), a nuclear weapons nation, member of the P5, having territories and departments scattered all over the globe, a powerful culture, a leading member of francophone nations, and one of the few nations in the world that can deploy relatively quickly just about anywhere on Earth. The United Kingdom has settled nicely into great power status, but the looming Brexit and possible Scottish cecession that could follow it signal that it could slip into middle power status. Regardless, it maintains a robust military (and is in the process of expanding its naval capability), a nuclear weapons capability, a leader in financial and other commercial markets, leading NATO member, P5, etc.
- They have NATO's second largest land force and standing army, growing economy, geographic location is at a global crossroads, respectable population size, land area, and economy size. Also their strategic location and ties with Islam can give it unique position to influence Middle East regions. Turkey has a population of 80 million with a fertility of <2.2 and falling. They could become an important regional power in the MENA, but they simply dont have the population to be a great power. Turkey's economy is smaller than Italy. (Italys is labelled a PIGS country, a large economy doesn't help if your overburdened by employment and excessive debt.) Their recent internal issues also don't help. Turkey is catching up. Turkey is a highly polarized country who can explode at every moment, I'm not sure it will keep her current borders in 50 years. https://tradingeconomics.com/italy/indicators
- China is a rising power. It's unclear whether it'll actually become a superpower in the short or medium term, or whether it'll stagnate like Japan did in the 1990s. Regardless, China is a nuclear weapons state, a P5 member, it's experiencing a booming economy (though slowing as of late), and has a massive labor force and incredible natural resources.
Another possibility I could see is things spiraling out of control like say China claims an island so the Philippines or whatever land troops on it and then China shells the island and then the Philippines launches a jet to sink the ship. But this situation is far, far less likely. Countries always have back channels of communication between militaries, ect.
Another possibility is some conflict in the Middle East that slowly pulls everyone in but again less likely then simply being a regionally confined conflict.
It's also likely WWIII wouldn't be a total war. There would be no final invasion of the loosing side, as the nuclear threat would be too great, and we don't have the stomach for the casualties any more. More likely, after defanging the military capability, the winner would just blockage the looser until they surrendered.
Proxy wars might be the status quo, but direct war seems obsolete to me. I think for a war now to reach a global level, it would have to be largely financially based (and we may be in one now). Management of markets and trade embargoes would lead to internal conflicts within governments that would extend across borders. It's not a war in the traditional sense, but I think it could still be considered a war. I'm doubtful of the utilitarian value of detonating a nuke during a proxy war. I believe in terms of military value there's more useful tactical weapons which also have less fallout..
War used to be more about territory because physical control over large territories was more profitable. Now countries and corporations can exert more economic control without a military presence. Rather than destroying factories with bombs, it's more profitable to exert control and get a slice of the pie. A nuclear war destroys value. Business (ideally) creates value. Since war is just a means of achieving a political or economic end, if Russia invades Europe or the Baltics, I don't see it going nuclear nor being conventional. People realize this day and age you can't conquer a country and rule it from afar as Germany did in WWII, so tanks won't be rolling into Europe any time soon. War used to be more about territory because physical control over large territories was more profitable. Now governments and corporations can exert more political and economic control with a political rather than military presence. If any country wants to resettle a territory it's better to do it politically with hybrid warfare, then you can start to resettle people like Russia is doing in Crimea.
It's impossible to outright conquer a country and cleanse it and resettle it, at least everywhere but Africa. Much more likely is smaller wars like Syria that create refugee flows that help spread Russia and Trump's version of nationalism and xenophobia. There could be small conflicts in limited circumstances for some strategic gain of resources, or physical security, or for regional geopolitical hegemony. For instance battles for strategically important choke points like the Strait of Hormuz, access to deep harbors like Crimea, and access to hydrocarbons, water resources, or for territory to use for renewable energy installations (like hydroelectric dams, wind turbines, solar), fights for food sources, rare earths, and other scarce resources.
The West Coast is less busy, with the traffic concentrated at a few ports and going straight in and out, rather than along the coast. Otherwise, the Russian Federation would have to deploy through the GIUK Gap which has been continuously monitored by a chain of underwater listenings posts. And then sale across some of the world's busiest seaways.
Since WWII its been the stated mission capability of the US military to be able to maintain two full scale wars on two fronts (think the pacific and western front in WWII)