BBC did a viddy on this in 1992.
http://www.youtube.com/watch?feature=player_embedded&v=AUvrPvV-KQo
Just paranoid, bullshit? Sponsored by the CIA and British intelligence, NATO operatives - under the false-front, operating as a "Marxist Terror Gang" kidnapped and murdered the Prime Minister of Italy in 1978.
This was just a single instance of organized para-national political violence including strings of European bombings and assassinations, beginning in the 1940's and continuing at least into the 1990's.
https://en.wikipedia.org/wiki/Operation_Gladio
Then, after the cold war, there are no longer "Marxist Terror Gangs". They all just gave up and went home, I guess. Now, there are "Muslim Terror Gangs". Amazing.
PS. Don't look too closely at the Balkans.