That's fine - when he's a real threat to us we can discuss further action, but at this point, it's simply not our problem. It's akin to being in a foreign country and seeing two drunk guys fighting - you going to pick sides and get involved?Sometimes trade/economic sanctions aren't enough. Just ask the Japanese. Too many people think that Vlad is thinking like most leaders of today. He isn't. Look at Soviet history. They have a loooooonnnnggg history of not caring if their people suffer at the expense of achieving their empirical goals.
And you can forget the 'global economy' argument - if that's really true, the global economy will punish the Russian economy - which is weaker than ours - before we have to get involved militarily.
If Putin moves again, it simply proves we need to stay out of it.