It is in no country's interest to have a major war - that's true of Russia over a Ukraine in NATO and the US or Poland over a Russian dominated Ukraine.

No, but certainly some people would profit from increased tensions - just as they've profited from Iraq, while the rest of the US has bled itself white, and just as they profited from WWII.

It goes without saying that there are people in the US who stand to profit hugely from Cold War II.

So far, this isn't so true of Russia. There's a lot of face saving and penis waving happening at the moment, but naked profit doesn't seem to be quite such a motivation.