Isolationism? Iran is very little threat to the citizens of this country. To the extent it is, it is only because Biden opened the borders and let Iranian sleeper cells in.
What you're advocating is George W. Bush's neocon policies on steroids. Bush wasn't even crazy to bomb Iran and think that it would result in a Western-friendly government emerging from the ashes.
Again, citing some ill-conceived or poorly conducted campaigns, and or ignoring long term positive effects, does not support your isolationism. And you continue to evade answering my questions: What would the the world would look like if American was strict isolationists and withdrew all forces in the world, and what threats would it face (like China be controlling the S. China sea, take over Taiwan, the Philippines, while Iran controls the Strait of Hormuz, etc. and with Russia controlling Ukraine and more)?