Nuclear weapons are required for deterrence  The use of nuclear weapons would indeed be a great tragedy; but so, to a greater or lesser extent, is any war. The reason for maintaining an effective nuclear arsenal is in fact to prevent war. By making the results of conflict catastrophic, a strategic deterrent discourages conflict. The Cold War was in fact one of the most peaceful times in history, particularly in Europe, largely because of the two superpowers' nuclear deterrents: ‘the principal function of nuclear weapons was to deter nuclear attack’ (Record, 2004). During the Gulf War, for example, one of the factors which prevented Iraq from launching missiles tipped with chemical weapon warheads against Israel was the threat the USA would retaliate with a nuclear strike. Although there is no longer as formal a threat of retaliation as there was during the Cold War, the very possibility that the use of nuclear weapons by a rogue state could be met a retaliatory strike is too great a threat to ignore. Moreover, although the citizens of the current nuclear powers may be against the use of force against civilians, their opinions would rapidly change if they found weapons of mass destruction being used against them.