Russian officials say an improvised explosive device with a “capacity of up to 1 kg [2.2. pounds] of TNT” brought down an airliner in the Sinai on Oct. 31. Between the apparent Sinai jet bombing and the attacks in Paris on Nov. 13, the Islamic State has killed more than 350 civilians in high-profile terrorist operations since the end of October.

The Islamic State’s Caucasus “province” has claimed responsibility for an attack on Russian forces. It is the first official claim by the group since it was established in June.
