The CIA is worried because the people in Europe are now p*ssed with the US over this and they are trying to deflect our involvement by pointing the finger towards Ukraine. There’s no way Ukraine could have pulled this off by themselves and nobody is buying this story.
The pipe was at 70 meters. Anyone could do it. Just need to pinpoint the pipe. 50 fathoms of steel cable and a fabricated grapnel will do that. Add a half-ton of explosives. Done.