The war on terrorism is a justifiable act. It can in fact be considered necessary. Terrorism is defined as the use of terror or threats as a means to achieving political goals. Terrorists resort to violent means such as killing and bombing to governments and leaders to comply to their needs. For instance, in the case of al-Qaeda's attack on 9/11, the terrorist organisation did so in order to get the world to acknowledge it -- in line with its aim of the creation of a Muslim caliphate. While the aim itself may be justifiable from particular religious interpretations, the violent means used cannot be ignored. Billions of dollars are lost, countries' security is threatened and most importantly, innocent civilians' lives are lost. No matter what the aim is, a civilian life lost is a life too many. To say that terrorism should not be fought against is nothing short of simplistic and naive. Ignoring terrorism will not make it go away. Imagine a bear breaking into your house. You would not just ignore it and hope it would not attack you. Terrorism needs to be fought, and the war on it is definitely justified.