Did the fact they were nuclear powers have any effect on their sponsorship of foreign conflicts? I don't see how it's relevant, they'd have done it anyway. Also

Did the fact they were nuclear powers have any effect on their sponsorship of foreign conflicts? I don't see how it's relevant, they'd have done it anyway. Also the nuclear powers often did intervene directly, as China and the USA did in Korea, and the USA did in Vietnam and Iraq, and Russia and later the USA did in Afghanistan.