Turkish President Recep Tayyip Erdogan has said Ankara will not allow Washington to delay the plan - which Turkish authorities have long been pressing for. Presidential spokesman Ibrahim Kalin told Bolton in a telephone call that "the Turkish side has completed preparations for the implementation of the Turkish-US joint operation plan without delay," Anadolu reported.
The two also discussed a possible meeting between Erdogan and US President Donald Trump on the margins of the annual UN General Assembly meetings in New York later this month. Turkey has repeatedly threatened to launch a new military offensive against YPG forces in northern Syria, where the Kurdish group controls a large swathe of land.