1) Not necessarily. Analysts believe that the next great war will be centered around the Middle East and that oil will be the primary issue. Oil was actually a huge underlying factor for both WWI and WWII, and throughout the Cold War. In the post-Cold War era oil became a publicized factor with the Gulf War; and then after 9/11 oil tried to pretend to be an underlying factor again with the invasion of Iraq. As China's population grows, China becomes exponentially thirsty for oil. China also knows what the rest of the global powers know - one may not build grand armies without it. This is why China's geopolitics in the Pacific and in the Middle East includes oil as a primary focus. Obama went to address this, but was stupid in his absolutism in regards to his "pivot to Asia" policy. Part of this pivot was based on foolish domestic politics, which demanded that we be rid of the Middle East. But as long as oil flows from the Middle East we can never be free of our policy there. Now, we have four things encouraging trouble ahead:
- Obama and Congress shrugged at the Arab Spring, which allowed Islamist-supporting states (Saudis, Qatar, Iran) to inject their influence over democracy and capitalism.
- Trump walked away from TPP. This was a billion-dollar deal that locked the Pacific into exclusive internal trade with the U.S., that also locked China out. This was effectively a defense pact.
- Trump's domestic-political, unwitting blunder with Iran has already pushed that oil supply towards China's orbit and opened a window to the Middle East.
- Trump's malicious betrayal of the Kurds handed Syria over to Russian and Iranian influence.
Both China and Russia have long been eager to push into the Middle East. Our enemies, since Obama abruptly and stupidly pulled the troops from Iraq in 2009~10, have steadily been gifted political influence across the region. We have allies who rely on that oil. These allies are stuck bending towards whoever controls the political influence within. We saw this in 2017~2018 when Trump tabled TTIP for a year and Western Europe had to bend towards Putin's pipeline diplomacy. Will this eventually develop into war as oil becomes less and less abundant? Yup. History is full of wars that center around resources. But now, even the global economy is attached to the oil.
2) In terms of nuclear weapons, the great powers will not be the problem. It is highly doubtful that the responsible powers will use them. And even if Iran does develop a nuke, it is highly doubtful that it will be eager to be annihilated, unless it becomes clear that going out with a bang is more favorable to being conquered and subjugated again. This would be a great time to go ahead and take out Israel too. But North Korea is an asshole. That rogue dictator will exploit the situation to parade himself around. He may excite a local situation with South Korea or Japan and do what the other nuclear powers will not. Obviously, this would be suicide. But the history here involves a North Korea that was on the receiving end of nuclear training exercises for decades before it tested its first nuke in 2006. It may escalate conditions where a stand-off with the U.S. occurs. And North Korea belongs to China. China would be in the Middle East. The U.S. (and allies) would be in the Middle East. Russia is also a fellow communist state and would be in the Middle East. This would be a good time to move to Argentina.