Bloc warns Turkish offensive would lead to the 'massive displacement' of refugees and risks 'severely undermining' political efforts to end civil war

Syrian news agency says Turkish forces hit positions of Syrian Democratic Forces militia in northeast of the country

In the US, Republicans and Democrats have warned that allowing Turkish attack could lead to a massacre of the Kurds and send a troubling message to allies across the globe

American-allied Kurdish fighters say withdrawal will undo achievements against Islamic State, accuse Washington of failing to honor commitments

Islamic State cells still hiding out in desert and members maintain support with some local organizations; Kurds struggle to deal with jailed terror suspects and refugee influx