And everything I read here is that the experts all points to Russia as the most probable culprit, but without being able to say why.
1) Signal: Nice other pipelines and cables you have here. Would be a pity if something happened to them.
2) Nordstream 2 (the one closed down half a year ago) is still intact. But if Germany wants gas through that...
3) as mentioned, contract penalties.
I wonder why everyone is suprised now. Destroying pipelines is a standard scenario for war times - even I know that and I never was in any army. The sea pipelines are an especially worthwhile target since they are so fucking hard to repair/replace.
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Putin is now in a position where he can only make "stupid" moves. At the moment he is putting out every thread he can get his hands on in a try to make weak western governments go back with their help through "we will freeze!" public pressure, "he will use atomic bombs" etc.
Thing is, he might. Because it's likely his life depends on it, so outside a total global destruction, he will do whatever is needed for his survival.
I know I do it far too often, but I want to point out the book in my signature.