I.S.I.S. Has Beheaded British Hostage David Haines in New Video

Haines, 44, like others in taped executions by the I.S.I.S., is forced to read a script, in which he blamed his death on British Prime Minister David Cameron and the British government’s decision to join the U.S. in the battle against ISIS.

David Cameron, British P.M. said on Twitter:

We will do everything in our power to hunt down these murderers and ensure they face justice, however long it takes.