Method.
Motive.
Opportunity.
The circumstantial evidence does not point clearly and uniquely to any one country. Unless Greta Thurnberg sympathizers were in charge of the people in charge of the airplane.
To establish “who did it” (who benefits from the bombs), what Putin should do is immediately offer to pay for the repairs. Those who complainand protest establish their guilt, don’t they?
Method. Covert high tech submersibles. Which Russia has many. Pre-planted charges. Timed or or remote detonation.
Motive. Neither line was producing revenue: one was shut for needed repairs, the other was never used. Waste of resources better shipped to China through the Siberian pipeline or to India.
Opportunity. Both lines are in Russia’s back yard, just a ways from Russia’s largest Naval base.
Most to gain: Russia. Propaganda value, division of Western powers to finger pointing, distraction from Ukraine war.
US: because a senile dementia-riddled old man mumbled something that was semi-coherent, everyone who hates the US wants to believe this time he was correct and tries to convince others to look away from Russia.
Method.
+Motive.
+Opportunity.
Putin ordered it, so he won’t pay for the repairs.