Answer:
1)The USSR and the United States had agreed to a treaty to reduce strategic nuclear weapons but they also had tensions in the military-industrial complex. The role of the United States was that of its competitor, until Russia had the crisis.
2)The world for which the Soviet economy had been designed had disappeared along with the regime, there was no more interest in wars if not in cyber information. The four centers of power were consolidated in the United States, Japan, the European Union and Republic of China.
