Introduction

In the past, the focus of foreign terrorists seemed to be the killing of large numbers of people by truck bombs, hijackings, and bringing down airplanes or crashing them into buildings. Domestic terrorism involved the use of improvised explosive devices (IEDs) in the form of pipe bombs and other IEDs, biological materials such as anthrax or just white powder incidents where the suspected biological material was a hoax. Foreign terrorism for the present has focused on the U.S. facilities abroad, such as the attacks on embassies and military installations. Attacks have also focused on Europe, Iraq, Afghanistan, Syria, Turkey, Yemen, and other countries.