A roadside bomb detonates in Iraq, with one of the victims in the blast important to the U.S.
The bomb struck a convoy carrying 39-year-old Sheik Abdul Sattar Abu Risha and his security detail.
Abu Risha is a key Sunni Sheik who united with U.S. forces to fight al-Queda militants.
He was one of several Sunni leaders who met with President Bush during his surprise visit to Iraq just last week.
Many fear the death of Abu Risha will be a huge setback to the U.S. military in Iraq.