Recent terrorist attacks on the World Trade Center towers and the Pentagon have accentuated the threat of terrorism.However, it appears that the attackers are popularly thought of as mentally deranged individuals who are evil. This article suggests that such an understanding is a misperception of these people and may interfere with an adequate response to prevent future attacks. The article reviews the extant literature on psychological theories of terrorism and concludes that terrorists are not dysfunctional or pathological; rather, it suggests that terrorism is basically another form of politically motivated violence that is perpetrated by rational, lucid people who have valid motives. The only real difference between terrorism and conventional military action is one of strategy. Terrorists lack the necessary resources to wage war in furtherance of their political goals.In light of the recent attacks on the World Trade Center and the Pentagon, it is imperative that scholars and government officials attempt to understand the mindset of terrorists. Only with such an understanding can the problem of terrorism be addressed in a way that ensures a long-term solution. Media announcements and government rhetoric have echoed popular outrage at the recent attacks and have called for swift retaliation. However, we cannot afford to allow our indignation and grief over the recent horrific events to cloud our judgments about the attackers to the point of interfering with an effective response. Labeling terrorists as "deranged" and "evil" may misdirect attention and obscure political, cultural, and economic conditions that give rise to terrorism. This article is presented in an effort to provide information that can be helpful in understanding terrorist actions. It rejects the notion that terrorists are mentally deranged people; instead, it proposes that terrorism is a form of military action carried out by rational and