政治：伊拉克多個城市發(fā)生爆炸襲擊
Hints：Fallujah，Baghdad
The violence began before dawn, with gunmen in speeding cars killing soldiers and police at checkpoints across Baghdad. The assailants used silencers, a new gangland-style twist to their attacks. In the hours that followed, two bombs, also targeting police, exploded in the capital. Other blasts occu…