1. b. it's authority could be invoked to quell revolts in soviet satellite nations.
The Warsaw Pact was a defense treaty that was signed in Warsaw, Poland between the Soviet Union and seven of the Eastern Bloc satellite states of Europe. This was a significant development during the Cold War. One of the purposes of the Warsaw Pact was to maintain Soviet control of military forces in Central and Eastern Europe.
2. b. mutually assured destruction.
Mutually assured destruction is a military doctrine in which the full-scale use of nuclear weapons by two or more opposing sides would cause the annihilation of both the attacker and the defender. This means that the threat of using weapons against the enemy prevents the enemy's use of the same weapons.
3. a. the superpowers continued to develop new nuclear weapons.
The fact that both super powers continued developing nuclear weapons throughout the Cold War meant that, even when relationships improved and a balance was reached, people continued to fear nuclear war.