The Libyan military strongman Gen Khalifa Haftar has left Moscow without signing a ceasefire agreement with the UN-backed Libyan government, the Russian foreign ministry has confirmed.

Russian and Turkish intermediaries spent Monday trying to persuade Gen Haftar and the Libyan Prime Minister, Fayez al-Serraj, to end nine-months of fighting in Libya.

Mr Serraj signed but Gen Haftar asked for a delay until Tuesday morning so that he could look over details of the proposed truce.

His forces have been besieging the capital, Tripoli, which remains in government hands.