However, Russia's leadership is too nostalgic (i.e. has a serious case of 'Old World Blues') for reason in the long term and China is going to stay united come hell or high water because of China's history and the federal leadership doesn't want to go down in history as the gaggle of idiots that caused a nuclear civil war.
The most likely scenario is that we'll start seeing Imperialism 2.0: Nuclear States Edition as the system finally collapses given that significant portions of the US population can't wrap their heads around the need for the US to go around like the world police and the requirements in terms of taxes and military spending for their quality of life.
If it ends up going like my setting "A New World: A World of Conflict and Sorrow" then call me a fucking prophet and my setting the next Stand on Zanzibar... and prepare for a very horrible, very bloody, heavily dystopic (if you like unrestricted rights) ride.
The problem is this.
In order for America to maintain this kind of system there has to be a benefit to the American people. The American led order was created to fight the soviet union.
The deal was America garentees every ones trade with every one else in exchange for the allies fighting the war they want and for acess to energy these were the ways America got paid.
With the collapse of the soviet union the threat was gone, with shale the need for outside energy was gone, the two pillars of the international system vanished. Then the European union created the dollar for the express purpose of removing the united states as the reserve currency of the world which was going to piss us of. China the country who benifited from the order the most crashed into our spy plane in international waters forced into their territory and stole the tech which was a real dick move this is on top of 30 years worth of trade greviances.
When 911 happened a huge chunk of America's nato allies either noped out of the fight or couldnt even participate.
You have a situation where one country is paying for every one elses trade, the enemy that caused the great alliance is gone, you no longer need the energy so keeping things stable is not your problem.
Into this environment your asking American citizens to give over their hard earned money and die for allies who don't help you, publically disrespect you and are directly undermining you. Tell the French to do that and they would laugh in your face and tell you to get fucked, the Chinese would laugh even harder.
Americans did that for 30 years, for no reward.
The fact that we bleed for the order died for the order and gave our treasure for the order for 30 years is a testament to our generosity as a country. The current system will end, another system will rise in its place and a lot of people will die.
And its not just americans who deserve the blame, its china, its Russia, its the EU. Eventally we as a country just got sick of it, people insulted us and mocked us for the security we sent our people to die for.
Their getting their wish hope their happy.