Hard to say, but given the realpolitik of the time, there doesn’t seem to have been much choice. The world was hostage to an indeological foe which took no prisoners and was looking to aggressively take over control of the world. That was their stated objective.
That’s mostly surface talk. They invaded fewer countries than the US has, sticking mostly to supporting rebellion.
The US and Europe squashed home grown communism mostly through things like social security, unemployment insurance, and a helping of good old propaganda. Yet, we where suckered into fighting ideology on foreign soil with military force.
I don’t think it was obvious at the time, but going forward we need to learn from these mistakes.
Korean War can be viewed North Korea as a separate country attacking South Korea, or a civil war. But, Vietnam war (including invasion of Cambodia) and a host of South American wars where much more clearly started as civil wars with Forein support not really invasions.
PS: Afghanistan is something of a wash with the US also invading the country.
