They scared off the near countries with threats and they gave up without a fight. they also shot bombs at them to prove their threats
Nationalism, Propaganda, and the Cuban Missile Crisis.
But the US had missiles pointed at Russia in Europe too so it was a lose lose situation for both sides.
They used tactics?
Soviet Union was communist.
The Chernobyl disaster Brought about perestroika
Scorch earth policy.
The August Revolt
Fear, and appealling to large quantities of people at the loss of the minority.
Soviet Union was communist.
The Chernobyl disaster Brought about perestroika
Staying put.
Scorch earth policy.
The collapse of the Soviet Union in 1990.
The August Revolt
The fall of the Soviet Union
the fall of the soviet union the birth of the country world war 2 the start of demorcry the start of the soviet union
The Soviet Union invaded Afghanistan.
Fear, and appealling to large quantities of people at the loss of the minority.
For the US look up the Pentomic Army.
This question is too broad, the Soviet Union spanned for almost 70 years. I will be happy to answer a more specific question.