18:26

A Foreign Office spokesman said: “It has been normal for states to inform the [UN] security council when they have acted in collective or individual self-defence.” The last time Britain informed the security council of armed action was in November 2014, when it announced it was joining the US-led operations against Isil in Iraq. In July, Turkey sent a letter to the council informing it, that it was launching operations against Isil in Syria.