This feels exactly what Russia has been doing for a couple of years. Not saying they did it this time, I have no idea. But it would be very much in character.
I’m not sure it’s them. But I just watched a video saying that the whole diesel thing is just a troll, it will neither solve the US nor Russia’s problem (the deal is way too small for both sides) but sow discord between the US and Europe for Putin and be a pre-election performance for Trump.
Russia's idea of hybrid warfare means doing things like dragging anchors across internet cables and paying people to firebomb warehouses and businesses.