That would not explain how there were multiple, nearly simultaneous explosions on two separate pipelines. And the pipelines were steel pipe encased in concrete - takes some serious explosive power to rupture that. Plus, John Brennan has already blamed Russia, and he’s always wrong. This IMO was a U.S. action to prolong the war.
Until a forensic analysis is done its all just speculation. Sabotage is clearly a possibility. Improper operations and maintenance is another possibility. Faulty materials or construction techniques would still be another possibility. Software failure used to control pumps and valves could be yet another. I’m sure there are others.
Too early to draw conclusions about who or what caused this.
"Navy’s Knifefish minehunter completes risk reduction test The U.S. Navy’s Knifefish, an unmanned undersea vehicle designed to modernize the Navy’s mine-hunting capability, is one step closer to reality after completing a comprehensive risk reduction program."
http://thebusinessofrobotics.com/military/navys-knifefish-minehunter-completes-risk-reduction-test/