Britain has backed international demands for Russia to be held accountable for the downing of a Malaysian Airlines flight over war-torn eastern Ukraine nearly four years ago killing all 298 people on board.

The Netherlands and Australia said they were holding Moscow legally responsible after international investigators concluded the missile which brought down Flight MH17 from Amsterdam to Kuala Lumpur came from a Russian military unit.

In a statement, Foreign Secretary Boris Johnson said the incident - which claimed the lives of 10 British nationals - was "an egregious example of the Kremlin's disregard for innocent life".

"The Kremlin believes it can act with impunity. The Russian Government must now answer for its actions in relation to the downing of MH17.

"The UK fully supports Australia and the Netherlands in their request to the Russian Federation to accept state responsibility, and to cooperate with them in their efforts to deliver justice for the victims of this tragedy.

"Instead of seeking to undermine the investigation through the deluge of disinformation we have seen from Russia about MH17 in the past, the Russian Federation must fulfil its obligations under UN Security Council resolution 2166 to provide any requested assistance to the investigation.

"To do otherwise would be a violation of the UN's resolution, and to deny the families the justice they seek for their loved ones."

The international investigation found the missile which brought down the airliner on July 17 2014 belonged to the 53rd Anti-Aircraft Military Brigade of the Russian army.

Previous inquiries have concluded that it came from a Russian-made Buk missile system, launched from within territory held by Russian-backed separatist groups.

Dutch foreign minister Stef Blok said that following the conclusion, the Dutch government was "taking the next step by formally holding Russia accountable".

He said: "The Netherlands and Australia today asked Russia to enter into talks aimed at finding a solution that would do justice to the tremendous suffering and damage caused by the downing of MH17.

"A possible next step is to present the case to an international court or organisation for their judgment."

Russian President Vladimir Putin's spokesman Dmitry Peskov rejected the findings, saying Russia had been barred from taking part in the investigation and did not trust its results.

The Russian defence ministry said the missile involved "more than likely" came from Ukrainian arsenals.

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