For now, Ukraine can worry about defending all that land it just “took back”. I see a lot of Russian artillery fire coming in the near future.
The US sure is good at getting itself into quagmires. That list is long, and the win list is not.
Because "our leaders" are either stupid, insanely ambitious, or both, and seem to be getting worse with the exception of Trump in this century. At least GWB's daddy had enough sense not to get stuck in the Tar Baby.