If Trump is a Russian asset, how was he allowed to run for his first term? Various agencies must have known.

Yanis Varoufakis explains the reasoning

As a map some days ago showed, Canada, Greenland, Panama, probably Israel, maybe even Ukrain - it’s all about shipping lanes.

All that effort makes sense if there is the believe that global trade will increase and that the USA will still be relevant when the center of the global population is in Asia.

So extinction is not the goal but could be an accepted risk.