Are we sure the U.S.S.R never had such problems? They were not well known for detailed and accurate reporting of events that put the government's abilities in a bad light.


Also, terrorism was not as much of a problem during the heyday of the Soviet Union's swagger, the 50s and 60s. Or if it was a problem the amount of damage that could be caused was certainly less than now due to technological advances since that time. It would be interesting to see if anyone has done any study of, or knows anything about, the incidences of terroristic activity directed at the U.S.S.R in the 50s and 60s vs. that directed against the U.S. You might well be correct.