Russia Ukraine war, page-209902

But you forget Vietnam was initially a proxy war that the US and it's allies were drawn into over time when their proxies failed to win.

Ukraine might* be different or quite similar but this time the enemy is Russia itself. I'd recommend meaningful negotiation take place between the US and Russia to end the war. It would be best for Ukraine and the world if a path to compromise and peace can be found.....ww3 won't be fun and the Russians and Chinese as an enemy will require conscription here...