Turkey says kobani about to fall as is advances
US-led strikes targets Islamic State & Khorasan groups
The military said five strikes by US hit near Kobani, the contested border city near Turkey.
Kurdish groups are reinforcing other Kurds the battle for Kobani intensifies.
The UN humanitarian chief, Valerie Amos, is calling for an urgent political solution.
Michael Fallon said both drones would fly over Syria as part of “efforts to protect national security".
Turkey said it would allow Iraqi Kurdish fighters to reinforce fellow Kurds in the Syrian town of Kobani.
The US said it had delivered weapons to the Kurds who are trying to stave off ISIS fighters.
US-led warplanes have halted the Islamic State from gaining control of Kobani.
Heavily outgunned defenders said IS militants had pushed into 2 districts of the Kurdish border city.
Kobani, a predominantly Kurdish settlement, has been surrounded by Islamic State fighters for three weeks.
The Islamic State wants to take Kobani in order to strengthen its grip on the border area.