Obviously

From the LA Times we learn:

Sunni Arabs say U.S. troops are raiding their communities in coordination with Shiite militias.

And Shiites say that U.S. forces are working with Sunni terrorist groups to conduct strikes such as the devastating car bomb barrage in Sadr City.

It just wouldn't be that hard to say "a pox on both their houses" and leave the vipers to their own tender mercies.