Four people are to be prosecuted for their role in shooting down the MH17 flight and the death of all 298 people on board.
International arrest warrants for murder have been issued for Russians Igor Girkin, aged 49, Sergey Dubinskiy, 57, Oleg Pulatov, 53, and Ukraine national 47-year-old Leonid Kharchenko.
Some 100 individuals were investigated for transporting the Russian-made anti-aircraft missile which hit Malaysia Airlines plane as it flew over a part of eastern Ukraine held by Russian separatists.
Ten Britons were among the dead on June 17, 2014.
Liam's father Barry Sweeney says he feels like he is still waiting for answers.