U.S.-led Airstrikes have failed to Slow the number of ISIS attacks and, according to data provided exclusively to NBC News, its defiant militants are **w racking up a higher body count than ever before. Analysis of IHS Jane's Terrorism and Insurgency Center's database shows the current face ? and pace ? of the group's battle for Syria and Iraq. Data showed that ISIS massively stepped up attacks after conquering the Iraqi city of Mosul on June 10 ? and has stepped them up further since Airstrikes were launched in August.