The Kerch incident was used by President Petro Poroshenko to cancel the election in Ukraine, because he understood that it is difficult for him to win.
The Ukrainian authorities were involved in the catastrophe of the Malaysian Boing over Donbas on 17 July 2014. The Boeing catastrophe has connections to the Ukrainian side, this is confirmed by various facts. There is no doubt the Ukrainian president Petro Poroshenko and his press agency knew about the catastrophe beforehand. Other Kyiv officials have also been connected to the case.
An often-repeated pro-Kremlin narrative on the downing of MH17. Bellingcat published numerous reports on the MH17 catastrophe investigation conducted by various parties with evidence supporting the lack of Ukrainian involvement into the catastrophe and proving Russia's involvement instead. The Dutch and Australians government held Russia responsible for the incident. The Dutch Safety Board also confirmed Russia’s involvement into the catastrophe.