Like with Iraq, Iran does not present a military threat to the US. I don't believe in going to war with a country that is not a threat to us. That has worked poorly when we did it in Korea, Vietnam, Afghanistan, and Iraq.
Iran will present a deadly threat to a very close ally if they are allowed to develop nukes. Unlike the US, Israel isn't big enough to survive even a very limited nuclear war.
As for the others:
Korea was fought under the UN flag. If you have a problem with the Korean War I request you blast out at UN policy, not US policy.
Afghanistan was given plenty of opportunity to cooperate with the US to hunt down the terrorists responsible for the 9/11 attacks and they declined repeatedly. The UN was aware of and, at least tacitly, 'allowed' the Afghan War to proceed. See Resolutions 1368 (12 Sep 01), 1478 (14 Nov 01), 1383 (6 Dec 01), and the Bonn Agreements (Dec 01) as well as others. Notice that after Dec 01 we were no longer at war with Afghanistan. The provisional government and the UN allowed the US-led coalition to remain in country to counter anti-government forces, specifically the Taliban and Al Qaeda. If you want to complain about this war I request you condemn the UN and, in this case, the internationally recognized government of Afghanistan.
I won't discuss Vietnam. I wasn't
quite old enough for required participation but I was certainly a part of America at the time and no side of that war was pretty. To me it was the last war (except for the on-going Israeli situation) of the post-WWII era when European countries broke up their former empires, which had various repercussions all over the globe.
who or what is The Shrub ?
I can see where you might not know that one. It's a derogatory term used by many for Bush
Jr (aka 'W') as opposed to Bush, Sr.
Since we've been talking about both Iraqi wars - and both had a 'Bush' as Pres at the time - I needed to distinguish between them, and I prefer to use Shrub instead of W; I don't think he's entitled to his own letter of the alphabet.