Terrorism became a global tactic of choice for revolutionary groups of the 1970s. The success of Palestinian militants in attracting attention to their cause inspired Marxist and nationalist groups to try their hands at kidnap, hijack and assassination. It also encouraged nation states to make use of terrorist groups and tactics to wage low-intensity war against their opponents.
Fergal Keane examines the development of international terrorism and charts the changing tactics of counter-terrorism.
Producer: Alasdair Cross.