The US just fought a 20 year war and shed quite a bit of blood and treasure. It also appears the US military has been "in country" in Ukraine under special non-uniformed deployments (read "on loan officially as mercenaries"). When was the last war fought by a Western European "power"? Europe fights, if at all, wearing blue helmets, or sometimes fighting "from the rear" behind US military might.
1. The US has shed blood for far less serious reasons. Less than 5 years ago we were "shedding blood" for opium farms in the middle east.
2. As it stands today, the US comes out on top. They paid a measly sum to throw Russia in the meat grinder and it will take decades until Russia is threat to the US again.
3. Our military hawks now get to focus on China. EU still has to worry about Russia
