First of all there is (EDIT: almost) zero trade between the US and Russia currently, same with North Korea. (EDIT: perhaps some token signal of wanting to negotiate over Ukraine? or perhaps even more “sinister” - getting US political opposition to falsely argue Trump is a Russian agent and make themselves look silly)

Second, yes part of the strategy is to force allies to self assess themselves and their dependence on US power. Trump and Nixon had a personal relationship and his fundamental strategy in business is based on creating uncertainty, it’s literally like point 1 of his “Art of the Deal” and however another part of that strategy is being willing to walk away.

We are living through a turning point in history where current US administration has reversed the open policy to China and for national security reasons are working to re-industrialize and militarize quickly as a strategy to deter Chinese ambitions.

It’s fine to disagree and argue the neoliberalism strategy of globalism isn’t dead but politically it is. Of course that world order is fighting to survive where it can, UK, France, Germany all putting up resistance to the rise of neo-mercantilism and nationalism but we will see if canceling elections, restrictions on speech and jailing politicians will work to block it.