The burnt Su-24 was discovered by local authorities after videos of the sabotage appeared online, Baza reported. Sefa Karacan/Anadolu Agency via Getty Images Russian authorities found out through social media that someone set fire to a military jet. Videos of the burning aircraft in Siberia emerged on pro-Ukrainian channels on Monday. Local security forces later found the scorched plane on the tarmac at an aviation plant. An unknown saboteur broke into a Russian airfield and set fire to a supersonic jet, and the local authorities didn't know it happened until they found out on social media, per reports from independent...