This piece by William Safire alleges that the CIA was engaged in terrorist activity in Russia in the early 1980s, sabotaging a gas pipeline funded by Britain and Germany, and allegedly leading to its explosion.
Of course, Safire doesn’t use the word terrorism and regards the whole thing as a major victory in the Cold War, but we don’t need to use our imagination to see how the US would regard the same thing done in reverse – blowing up pipelines is one of the main terrorist activities of the Iraqi insurgents.
The sabotage was allegedly done by supplying defective computer chips of a type that were under embargo because of their supposed military use. I get the impression Safire thinks that this makes the deal OK and that it’s different from blowing up the pipeline with dynamite (but I can’t be sure of this).
Finally, I should add that the story sounds phony to me.