Iraqi police say at least two people were killed when a bomb exploded near their home in Baghdad Tuesday.
In Samarra, north of the capital, a car-bomb blast near the home of a city council member injured at least five security guards.
Earlier, at least 10 people were killed in Baghdad when a truck filled with explosives blew up outside a Shi'ite mosque, just as worshippers were leaving after Monday evening prayers.
U.S. Secretary of State Condoleezza Rice and British Foreign Secretary Jack Straw, who completed two days of meetings in the Iraqi capital Monday, are urging feuding Iraqi leaders to form a new unity government as soon as possible.
Iraq's poitical factions have been trying to form a government since parliamentary elections in mid-December.
Meanwhile, the U.S. military says eight American Marines and a U.S. sailor were killed in two separate incidents in al-Anbar province Sunday. Five Marines died when their truck rolled over in a flash flood. Two other Marines and a Navy corpsman were missing since the accident.
Other casualties occurred during combat operations in the region.