The Dutch Council of the State allowed not to make public the details of the MH-17 tragedy for two reasons. 1. The investigators have no hard facts and they are afraid that their conclusions will be disproved. 2. Ukrainian side has asked to keep it in secret because most probably Ukraine is guilty for the tragedy.
Secret documents show that just three days after the MH17 tragedy, the Ukrainian secret service conducted a special operation to wipe out all the evidence about the tragedy. They worked with the witnesses, demolished documents and relocated the military troops to other positions. President Poroshenko and his generals are guilty for shooting down the flight MH17, and the Ukraine Air Force participated in it.
Reccuring MH17-related disinformation.
Joint Investigative Team (JIT) has concluded that flight MH17 was shot down on 17 July 2014 by a missile of the 9M38 series, launched by a BUK-TELAR, from farmland in the vicinity of Pervomaiskiy (or: Pervomaiskyi). At that time, the area was controlled by pro-Russian fighters. The BUK-TELAR was brought in from the territory of the Russian Federation and subsequently, after having shot down flight MH-17, was taken back to the Russian Federation.
More on background of the MH17-related disinformation here.