That is a popular myth but really the USSR military spending sloped up independent of external factors and while pervasive never moved the needle in terms of political problems.
Far more destructive we’re long term structural problems (inability to provide consumer goods, lack of various sorts of personal freedoms). These had been tolerable in extremis (post revolutionary fervor, rapid growth/modernization, a big war) but increasingly destroyed enthusiasm and then support formhe regime. Low oil prices were the trigger.
Far more destructive we’re long term structural problems (inability to provide consumer goods, lack of various sorts of personal freedoms). These had been tolerable in extremis (post revolutionary fervor, rapid growth/modernization, a big war) but increasingly destroyed enthusiasm and then support formhe regime. Low oil prices were the trigger.