Ukraine’s security service, known as the SBU, on July

18 published additional intercepted telephone conversations that further implicate Russia in the downing of the Malaysia Airline Flight 17, killing all 298 people on board on July 17. The conversations allegedly took place between Russian

military intelligence officers and their armed proxies who discussed the delivery

of a Buk missile system from Russia ahead of the downing of the Malaysian

passenger jet.

Classified by NATO as SA-11 GADFLY, Buk missile

systems are advanced, radar-guided surface-to-air missile systems, or SAM in

military lingo. Four Russian SAM systems could knock down a passenger jet

flying at 33,000 feet, according

to Defense Tech, the same altitude at which the Malaysian airliner was

flying when it was hit.