The first and second world war have these specific characteristic: the idealogoy behind these wars, historian calls this the age of extreme. Which looks at the ideologies behind world war one and ww2. Fidel castro wanted to use nuclear weapon to save cuba so for castro the rule of deterrence didn"t apply. Example is conflict in kosovo to do ethnic cleansingso the target is different : swaggering: displaying your forces. Because of the domination of conquest, states started to adapt aggressive policy. Russia perceived as a major threat : once a big power like russia started to mobilize its troops and the answer to potential adversary is to mobilize equally . You cannot delay and every delay gives your adversary potential: diplomat started to conceal or hide their initiative, t rust started to disappear, shclelepand wrote a plan of attack to destroy french army in france in six week.