All 298 people on board Malaysian Airlines Flight 17 died when it broke up in mid-air over Ukraine in 2014. Investigators have said the missile that brought down Malaysia Airlines Flight 17 in 2014 came from the Russian military. A Dutch-led team said in a press conference Thursday that the Buk missile that downed the plane belonged to Russia's 53rd anti-aircraft missile brigade, based in Kursk, a city 300 miles south of Moscow.