This is one tactic that the groups uses and it proves to be quite effective. They are supported by many people around the world, whether it is through finances, weapons, or information (http://www.globalsecurity.org/military/world/para/al-qaida.htm).
Al-Qaeda uses media as a attic quite frequently. They like to present a future threat by using television. They may say that they are going to bomb this city or highjack a certain plane and present it clearly over the media. Otherwise they use it to show people what they are capable of and to show the impact of what they did. Most Al Qaeda what the news after each attack just to see the impact on the group of people they did it too. As of right now, we are assuming that the Al Qaeda is growing. We cannot be all too sure because of the vast area that the group covers. We would like to think it is shrinking, but judging by what is going on in the world right now, it does not look too promising (http://www.globalsecurity.org/military/world/para/al-qaida.htm).
Not only does the war on terrorism deal with foreign terrorist groups such as the Al Qaeda, they also have American terrorists here in our own country. This is referred to as Domestic Terrorism. This can be defined as "a person engages in domestic terrorism if they do an act that is dangerous to human life that is a violation of the criminal law of a state or the United States, if the act appears to be intended to: intimidate or coerce a