Moscow blames Ukraine for the disaster, in which all 298 passengers and crew were killed. In a version of events widely believed in the West, Ukraine says the Boeing 777 was shot down by pro-Russian separatists with a surface-to-air missile.
"The Boeing catastrophe throws up more and more questions. But lately not many people are talking about this," Anatoly Antonov, deputy defence minister, told RIA news agency.
"Why have the data still not been published about the conversations between the air traffic controllers and the pilots of the Boeing?