A Downing Street spokesperson said:

The PM supports the latest air strikes against ISIL terrorists which have been carried out by the US and 5 other countries from the Gulf and Middle East.

The PM will be holding talks at the United Nations in New York over the next 2 days on what more the UK and others can do to contribute to international efforts to tackle the threat we all face from ISIL.

The UK is already offering significant military support, including supplying arms to the Kurds as well as surveillance operations by a squadron of Tornadoes and other RAF aircraft.