Johnson says Russia may have committed war crime in Syria
Russia is guilty of prolonging the Syrian war and may have committed a war crime by targeting an aid convoy, Boris Johnson has said.
The Foreign Secretary urged the west to take stronger action as he said they are "too impotent" in response to the deepening crisis.
He said that Moscow "are guilty of protracting this war and making it far more hideous," in an interview with the Andrew Marr show.
He also raised the suggestion that Russian may have committed war crimes after it was accused of being behind a bombing on a aid convoy on Monday that killed 20 civilians. Russia has denied the charge.
Mr Johnson said that since so-called "red lines" were crossed in 2013, the west have not sufficiently proactive response.
"I don't think there's any real appetite for such a thing," he added.
He suggested that exerting pressure on Vladimir Putin's regime, which has been a key supporter of Syrian president Bashar al-Assad, was central to resolving the crisis.
"I think there's one thing that the Russians respond to and that is the idea that is they who are in the dock in the court of international opinion, [and] they are guilty," he said.
In similar terms to Mr Johnson, French foreign minister Jean-Marc Ayrault also warned Russia and Iran risked becoming accomplices in war crimes in Syria.
In a written statement, Mr Ayrault called on Russia and Iran to "take their responsibility by stopping this strategy that leads to a dead-end" or risk becoming "accomplices of the war crimes committed in Aleppo".