Since 1968 and the start of 'The Troubles' in Northern Ireland, terrorism and counter-terrorism have grown in significance and importance within the domestic sphere of Great Britain. British counter-terrorism has evolved in response to the changing nature of terrorism. The model of counter-terrorism on display domestically in Great Britain consistently across the nearly half century is what Ronald Crelinsten refers to as the 'criminal justice model'. This consists of treating terrorism as a crime and, at least domestically, using the tools of the criminal justice system to combat it. In that sense the 1980s into the early 1990s represented a more significant turning point, sped along by the dissipation of the Cold War, for the British security state's appreciation of the seriousness of the threat of terrorism. There was unhappiness on the part of many British Muslims over a variety of issues, including UK foreign policy and Western foreign policy more generally in places such as the Middle East.