Way back in 2003 when the President told the insurgents to "bring it on" they were apparently listening closely and ready willing and able to oblige him. Over two thousand Americans and countless tens of thousands of Iraqis have been killed since then.
Maybe it's time for the President to tell them it is time to stop. They proved their point. They no longer need to bring it on. In fact he'd really be happy if they'd turn it off. They really heeded his words back then maybe they'd do the same now.