War-weariness is the public or political disapproval for the continuation of a prolonged conflict or war.
It also occurs when a belligerent has the ability to leave the conflict easily but continues to stay.
War-weariness normally leads to a distrust in government or military leadership and can spark protest and anti-war movements.
It can also be fueled when a belligerent is found guilty of war crimes, which can create domestic and international backlash.
[1] In 1988's The Causes of War, Australian historian Geoffrey Blainey argues, "If war-weariness was one of the spokes in Mr. Neville Chamberlain's umbrella of appeasement, and if it was one of the Anglo-French attitudes which fed Hitler's confidence, it cannot be called a peaceful influence".