In this particular conflict, the stakes for the EU is much higher than for the US. Sure, the US is historically (recent) more happy to go into conflicts around

In this particular conflict, the stakes for the EU is much higher than for the US. Sure, the US is historically (recent) more happy to go into conflicts around the world, but this is a conflict bordering many EU states. The Baltics, Poland, Slovakia, Hungary, Romania definitely aren't happy seeing Putin on their doorsteps.