Syria conflict: US air strikes 'kill dozens of government troops'

Fighters of so-called Islamic State in Deir al-Zour, where they have been battling Syrian troops

The US-led coalition has admitted its planes carried out an attack in eastern Syria that the Russian army says killed at least 62 Syrian troops fighting IS.


The US said its planes had halted the attack in Deir al-Zour when informed of the Syrian presence.


The strikes allowed IS to advance, said Russia, which called an emergency meeting of the UN Security Council.


The Russians earlier said the current ceasefire in Syria was in danger of collapse and the US would be to blame.


The cessation of hostilities does not include attacks by the US on IS or other jihadist groups.