"So if a country doesn't share your goals and values?"

Correct. If their goal is to kill us, and their values are to pervert an otherwise peaceloving religion into one of death and destruction, then, the answer is a resounding yes.

"The rest of the world, ie the UN, had decided that about Iraq"

You can't pick and chose what the world decided to suit your argument. The rest of the world also unanimously decided Iraq should disarm. We all decided on the end, but we were the only ones to provide the means as well.