From what I understand, not hindering Soviet support of communist parties in the east. Let’s not pretend that the west did not intervene in the east when it suited their purposes and then refuse to carry through on their promises.
The Cold War was the responsibility of both the US and Soviet Union. They both benefited, at home and abroad. We need to stop pretended that “our” side were somehow less responsible for it.
Power is and always is the problem.
