Would it be possible to have the AI switch to a more restrained nuking behaviour after having had atomic weapons for awhile? Or perhaps after World War 2 is 'officially' over? There needs to be some mechanic to simulate Cold War-style conflicts, you can't have major powers nuking small nations every time a war between them erupts. Since 1964 actually seems 'supported' rather than just 'enabled' as an end date, such an AI setting would be useful.