I think it would increase the chances for escalation and war. It's hard to be allies with knives on each other's necks. If the us wants peace and power it should embrace its allies like it did most of last century. If Europe becomes militaristic then it's culture will become militaristic, then will be constantly on the verge of war. It will escalate.

I don't think this is really good for the US or anybody else in the long term.

Europe should arm up, but US should cultivate a friendly relationship. If Europe would arm up and the US keeps pushing it'll either end up with escalation or US will have to start dismantling European cohesion, both out comes would be bloody.

Plus, If this tragedy happens, China would have an easier time dominating.