Extremist groups around the world have perpetrated terrorism as a means for religious or political goals. These acts of violence are targeted at densely populated cities. This is done to leverage human fear to achieve the main goal of the group. One of the most infamous terrorist attacks was the attack on the World Trade Center in New York City on September 11, 2001. Since then, U.S. policies have changed and have also contributed to the propagation of terrorism.
After the 9/11 attacks, former Secretary of Defense Donald Rumsfeld and former Secretary of State Colin Powell have emphasized that the primary goal is the destruction of terrorism. This objective would be completed with the death or apprehension of terrorists (natsecarchive). "For every enemy we kill, we create hundreds more" is the aphorism often used to describe the effect of US policies on terrorism (huffpost) Killing a terrorist would not solve anything. Knock one down and many will stand up in his place. For 10 years, the U.S. has searched for Osama bin Laden, the man responsible for the attacks on the World Trade Center. He was finally killed in 2011. Killing the world's most dangerous man was said to be a "justified killing". The aphorism stated before is definitely validated based on the fact that we don't know if killing bin Laden has created some unknown enemies. Enemies that can turn up as terrorists. The blowback of an objective that was publicly emphasized so many times can not spread terrorism but sustain it.
The US invaded Iraq in 2003 and it became more of a war-torn country than was before. The war was a result of U.S. sanctions that resulted in the deaths of over 1 million Iraqis. Over half a million Iraqi children died because of either getting caught in crossfire and "minor bombings” or the malnutrition/diseases caused because of the lack of clean water and medicine. Not only in Iraq have the actions the U.S. has taken come at a great cost. As of February 2013,