Terrorism
In November 2004, a Secretary-General of the United Nations report described terrorism as any act "intended to cause death or serious bodily harm to civilians or non-combatants with the purpose of intimidating a population or compelling a government or an international organization to do or abstain from doing any act". The international community has been slow to formulate a universally agreed, legally binding definition of this crime. These difficulties arise from the fact that the term "terrorism" is politically and emotionally charged. In this regard, Angus Martyn, briefing the Australian parliament, stated,
The international community has never succeeded in developing an accepted comprehensive definition of terrorism. During the 1970s and 1980s, the United Nations attempts to define the term floundered mainly due to differences of opinion between various members about the use of violence in the context of conflicts over national liberation and self-determination.
Foreign internal defense
Insurgency matters today because it is linked to the phenomenon of transnational terrorism. Insurgents have long used terrorism in the operational sense, deterring those who supported the government and creating an environment of violence and insecurity to erode public trust in the regime. But now terrorism plays a strategic role as well. Insurgents can use terrorism as a form of long-range power projection against outsiders who support the government they are fighting. This could deter or even end outside assistance. It is easy to imagine, for instance, that the already fragile backing for American involvement in Iraq would erode even further if the Iraqi insurgents launched attacks in the United States. Even more important, an insurgent movement able to seize control of a state could support transnational terrorists. The idea is that insurgents have demonstrated an affinity for violence and extremism which would flavor their policies if they came to power.