The Quran condemns the "munafig", those who claim to be believers and peacemakers and are not. Do all the radical extremists realize that by your actions, you give all of your religion a bad name?
Now, I'll admit I'm not Islamic, I'm a white-as-bleach Christian, but bear with me here. When one complains that they are victim to persecution, if they retaliate with bloodshed and killings, will it help anything?
The simple answer is no. Violence may be necessary to defend the innocents, but it should be considered that in defending your innocent flock, you could end up being the one stirring up the thoughts of hate towards them. Violence is the worst scourge I believe God gave man, starting with Cain. It kills and injures, and can fix nothing. Granted, there are times when the evildoers must be attacked, struck down, destroyed, and annihilated, but will you fix anything by striking those who do not aim at you.
I'll talk about 9/11 now. Through a radical group attacking a divided nation, the majority of the world's current problems were made. Yes, America is divided. Very rarely can any action be condoned as American, for there is never the full body voting in unison on any decision.
Also, on Iran, the nuclear facade has to stop. You have nukes, or you don't. Don't mess around. America is known for attempting to defend those attacked by their neighbors, but nukes are serious weapons, not to be used like toys on a playground. Nukes are the worst answer to any problem.