Terrorism

Terrorism is a controversial term with no internationally agreed single definition. There are however several International conventions on terrorism with somewhat different definitions. The United Nations see this lack of agreement as a serious problem.In one modern sense, it is violence against civilians to achieve political or ideological objectives by creating fear. Most common definitions of terrorism include only those acts which are intended to create fear (terror), are perpetrated for an ideological goal (as opposed to a lone attack), and deliberately target or disregard the safety of non-combatants. Some definitions also include acts of unlawful violence and war.
Terrorism is also a form of unconventional warfare and psychological warfare. The word is politically and emotionally charged, and this greatly compounds the difficulty of providing a precise definition. One 1988 study by the US Army found that over 100 definitions of the word "terrorism" have been used. A person who practices terrorism is a terrorist.
Terrorism has been used by a broad array of political organizations in furthering their objectives; both right-wing and left-wing political parties, nationalistic, and religious groups, revolutionaries and ruling governments. The presence of non-state actors in widespread armed conflict has created controversy regarding the application of the laws of war.