Trump has shed United State's role as the leader of the world. A Lot of countries look up to the United States previously to take the lead on world affairs like climate change and human rights. Trump's America first policy and his immigration stance seem unpopular to some persons. His withdrawal of the United States from the 2015 Paris agreement on climate change complicates the whole thing. Who will now fill the void between China, Russia, Germany or Canada?
The leader nowadays is those coming from powerful countries like China (Xi Jin Ping) Russia(Vladimir Putin) United States ( Donald Trump ) North Korea ( not sure of his name though) now from overpowering powers, a war might start becaise of conflict of views.