What was the end to the red scare?

If by 'red scare' you mean the end of the arms race and the cold war, there are a lot of opinions on that. In my opinion, the Russians ran out of money and gave up. The Russians were impressed by the pin-pint accuracy of American bombs dropped in Kosovo and Iraq. Our laser guided armaments were extremely accurate. Further, Ronald Reagan promised to put shield for nuclear weapons that Russia couldn't match. I think they threw in the towel.