The problem they have is that they have nowhere to expand to, and from US perspective there is nothing more that can be achieved there going forward. The US simply doesn't have the resources to take on Iran, China, and Russia all at the same time, so they're going to have to pick their battles going forward. The US sees China as the primary adversary, and I expect that Asia will be where US focus will increasingly shift. This necessarily means having to cut Europe loose. The other side of this is what we're seeing happening in France and Germany right now where liberal centre is collapsing. I fully expect that nationalist parties will take power within a few years, and these parties are hostile to NATO.