Russians say improvised explosive device brought down jet in Sinai
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.