The goal does not justify the means. If you observe what happened in the anti-communist frenzy you will observe total paranoia and delusion in some US policy makers. The whole fear for communism was totally blown out of proportions. Those choices weren't the only ones conceivable. They were madness back then. Plus killing innocents is never acceptable. Let alone ordering your contras to attack civillian targets.
McCarthyism was pretty messed up, but I think paranoia was inextricable from the problems that Western World was facing against Communism. You can't say that it wasn't warranted. Curtailing of civil liberties i.e., suspension of Habeas Corpus in Civil War, internment of Japanese, Fighting communism in the cold war , and now the Patriot Act and invasion, occupation, and reconstruction of hell-holes are all ugly solutions that were/are ultimately better than the alternative. Just because these solutions are hideous doesn't mean that they are wrong.
Again, killing civilians by accident is acceptable when it ultimately saves far far more in the long run. I could give about a dozen examples. Inaction or incompetitence ala UN is far worse, in my opinion. Look up Srebrenica, Rwanda, Darfur etc...
Its just a cycle, the fact that Syria sits on the concil is meaningless. The UN can't do anything to fix the Israel problem because of the US veto on the SC.
Yeah! The UN is a hopeless, corrupt, powerless body that the US doen't take seriously (with good reason).
Things went terribly wrong with the most absurd situation being Iraq. Lets not forget that several countries are guilty of these. But I do not understand. Surely doing totally away with the UN would be way way worse. Rather than attack 'powerless' morons, lets look at who is blocking action in the UN. The US is directly involved with all of our examples. I am not saying they are entirely and solely responsible for all of these situations. But if they at least tried surely half of them would have turned out better.
Mistakes were made in Iraq, but the whole plan hasn't failed. A free and consensual democracy is emerging, despite all the whack sh*t that is happening over there. Just wait and see!
The UN in theory is great, but in practice is a complete joke. I think the whole institution should be rebuilt from the ground out. That may end up happening.
But this all has nothing to do with it. The international court made a decision and only El Salvarode and the Israel agreed with the US while 20000 people were being killed with support and by the US. Frankly, your 'nobody' was a huge majority of the countries representing basicly all people of the world living outside those three countries.
I don't care! Honestly, what bearing does this ridiculous ruling have on reality. (respect my alliteration)

If you are involved with so much conflicts where innocent people are killed it should be no suprise if some people descide to attack back. Frankly, the US is a democracy so the people are responsible for their government. It would be hard for me to say the people that died in 9/11 are innocent if it wasn't for the major flaws in the degree of democracy in the US.
This is absurd. Are you somehow suggesting that people killed on 9/11 were somehow guilty? The Islamic fundamentalists who attacked the US and ultimately want to destroy it will keep doing that, regardless of the United States' Foreign Policy. As smart-guy Victor Davis Hanson said, (im paraphrasing) "They hate [the US] for who we are and what we represent, not what we purportedly do".
In terms ocasualties 9/11 is meaningless. In terms of reaction and change in the world, its a major event. It just tells us that one US citizen equals 1,000 people from a third world country, maybe even more.
OK. You've established that you don't have any historical perspective and aren't able to understand world politics. Im satisfied.