ISIS Claims Responsibility for Egypt Church Bombing and Warns of More to Come After an attack in Cairo that killed 25 people on Sunday, the Islamic State vowed to escalate its “war on polytheism,” a reference to Christianity. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Syrian Offensive Leaves Thousands Stranded at Jordan’s Closed BorderMexico’s Elections: What to Watch ForCriminal Groups Seek to Decide Outcome in Many Mexican RacesBelgium Honors Congolese Leader It Helped OverthrowTrump Says Saudi Arabia Will Increase Oil ProductionSouth Sudan Cease-fire Violated Within Hours