Russia's President Vladimir Putin has called for coordination in the fight against the Islamic State, while reiterating his support for Syria's beleaguered president, Bashar al-Assad.
In an interview with the US TV station CBS, Mr Putin said Syria's troops were "the only legitimate conventional army there". He said that they were fighting terrorist organisations and Russia "would be pleased to find common ground for joint action against the terrorists".
US Secretary of State John Kerry, however, said the efforts were "not yet co-ordinated" and the US had "concerns about how we are going to go forward".