Operation Nimrod - The Iranian Embassy Siege

Western governments were prompted to form specialist anti-terrorist units following the "Munich massacre". During the 1972 Olympic Games, a firefight between a group of hostage-takers and West German police left a police officer and all the hostages dead. The British government, worried that the country was unprepared for a similar crisis in the United Kingdom, ordered the formation of the Counter Revolutionary Warfare (CRW) Wing of the SAS, which became the UK's primary anti-terrorist and anti-hijacking unit.