The Stop the War Coalition (StWC) (informally just Stop the War) is a United Kingdom group established on 21 September 2001 to campaign against what it believes are unjust wars. The coalition has opposed the wars that are part of the so-called "War on Terror" of the Western nations. It has campaigned against the war in Afghanistan and the Iraq War. The demonstration against the latter on 15 February 2003, which it organised in association with Campaign for Nuclear Disarmament (CND) and the Muslim Association of Britain (MAB), is claimed to be the largest public demonstration in British history.