Ukrainian President Petro Poroshenko said the Russian government should be held accountable for the downing of Malaysia Airlines Flight MH-17 last year over eastern Ukraine.
In an interview on CNN's Fareed Zakaria GPS, Poroshenko said the nation or person responsible for shooting down the Malaysian airline should be brought to justice.
A Dutch-led investigative panel into the crash of MH-17 said in a report released last week that the plane was shot down by a Russian-made surface-to-air missile.
The head of Russian Federal Aviation Agency has disputed the reports.
Russia has asked the United Nations to open a new investigation into downing of the flight.
The Boeing 777 was downed on July 17, 2014, over eastern Ukraine, the scene of fighting between pro-Russia rebels and Ukrainian government forces, killing all 298 people on board, most of them Dutch nationals.
The Dutch-led panel, which included investigators from Australia, Belgium, Malaysia and Ukraine, did not explicitly assign blame, despite Western suspicions that pro-Russia rebels in eastern Ukraine shot down the plane, mistaking it for a military aircraft.
The 15-month probe only identified an area of 320 square kilometers (120 square miles) from where it said the launch must have taken place.