Zim: "Interesting question - "Is Ukraine going to let Russia 'declare victory' and keep their 'prize'? Because I wouldn't. If I were Ukraine I'd just keep on killing Russians till either Russia imploded (again) or they left every square millimeter of Ukraine."
IMO, That means you aren't sufficiently strategic, and you don't appear to play a very deep game (fully incorporating feedback and frame). That is generally a failing of NeoCons, Socialists, and children. When something isn't working, or resources really need to be deployed in a different order for better longer-term results, a deeper game - and delayed (or even subliminated) gratification - is suggested. But if you can't do a deeper game, and you lack self-restraint, you keep on doing what didn't work very last time, nor the time before, nor the time before that...and then your time runs out.
US military is weak because our leaders are weak...weak in the head. The US leadership, including its top military leadership, generally acts like a spoiled child: "To the man whose only tool is a hammer, everything looks like a nail."