DUBAI (Reuters) - The new leader of al Qaeda in Iraq "slit the throats" of two U.S. soldiers whose bodies were found in Baghdad, according to a statement posted on the Internet on Tuesday. "God Almighty has graced the leader Abu Hamza al-Muhajir ... with the implementation of the sentence," said a statement from the al Qaeda-led Mujahideen Shura Council. It said the two had been killed by having their throats slit. The statement could not be authenticated. It was posted on one Web forum used by Islamists, but not on the main site used by Iraqi insurgent groups. The...