Earlier quoted context omitted.
Putin has plenty of interest in sabotaging the pipelines. If the pipelines are destroyed, one cannot kill Putin, take over, and sell gas to europe again to be rich. The US would suffer an incredible risk if it ever came out that they intentionally sabotaged European energy supplies to such a scale.
What risk? The US says jump and European politicians ask how high...
I mean, if that were true Julian Assange would be in a bodybag right now, wouldn't he?