>>513836399
Actual retard.
We're still constrained by logistical capacity and the domestic will to fight. A strong enough coalition could deter us or outright repel us easily. Israel ran out of all the interceptor missiles we gave them within a week from fucking Iran alone and we only make 600-700 of those a year.
Russia, Iran, and China together would easily be able to overpower our navy and air force if we're on the attack. Whether it's drone spam or missile spam or actual conventional warfare, we would get ground down or bogged down. China by itself would already be too much of an ask for us since boots on the ground is the only way of actually reaching objectives and there's a billion of Chinese and they could reasonably mobilize 10 million+ for their armed forces in little time
Also, Americans are pussies. Once we're fighting actual powers and start getting hit with the aforementioned spam, we'll balk and leave. You'll have some obese pig looking woman tard yelling,
"ZOMG MY LITTLE TIMMY BOY GOT HIS ass HAMMERED by 15 different PL-15 missiles from Sunday. I thought we wuz invincible n sheit cuz Jesus loves Nascar!!!!"