Ukrainian President Petro Poroshenko vowed to expose those responsible for the Malaysia Airlines flight MH17 tragedy.

Poroshenko pledged to bring the probe into the disaster to a prompt close so the world could know the names of the attackers and has appealed for more support from the west in Ukraine's fight against pro-Russian separatists.

"Those who should be responsible for the terrorist attack ... the world has the right to know their names," he said in an interview with ABC Australia TV channel posted on its website on Saturday.

The Ukrainian leader has said he hopes that the final results of the investigation into the crash will be published in early 2015.

The Ukrainian president reiterated that there was the evidence that the Russia-backed attack was made from the militants-controlled territory.

"Ground-to-air missile has been brought from Russia, we have a satellite photo of this missile launch," he added.