The biggest problem
The problem is "terrorism" or "world terrorism" you may say.
It is not a problem of United States or Iraq; it is ours, mankind's maybe forever. Our security forces are searching for militants day and night, but what will really happen? One will be jailed; another will join the bombers to be. We can hurt terrorist by arms, cannot destroy it. So, who can help? It's the educated leaders and teachers, who can help and teach people, even religiously. If Islam does not say to choose the path of violence then it says to teach and invite people to the path of peace. Terrorism is like a deadly virus, which has already infected our community and needs to be tackled by joining hands.
We can fight a "war on terror," but not by false excuses; we can fight with kindness and literacy. We must be very careful while taking steps. Why Iraq is in fire? Because the war was truly unnecessary. If Saddam Hussain had remained as the President of Iraq, he would not let Al-Qaida to move into his country, as it has now. Then United States could have put political pressure on Saddam to promote freedom and democracy in the country. Also they could have tried to develop healthy relations with the Arab world and with whole Muslim population, so that Bin Laden would not have any chance to encourage innocent people to join his network, which has more spread more all around the world.