"Focus on 'do-it-yourself' jihad has allowed them to franchise their attacks worldwide, achieving a tempo of violence that has surpassed even al Qaeda's most violent years," says Mr. McCaul. "However, this report reminds us that we cannot win by simply bombing terrorist safe havens. Today's jihadists are finding shelter in virtual safe havens, too, and recruiting with the ease of a retweet. That is why a counter-ISIS strategy focused on Syria and Iraq just won't cut it. We need a global plan to defeat Islamist terrorists and a robust coalition to see it through."