Washington says it has stopped shipments of major military hardware and halted $260-million in cash aid to Egypt's military leaders.
On day three of talks between the United States and Russia, the two agree to eliminate Syria's chemical weapons by mid 2014.
The US and Russia were to hold a third day of complex talks, seeking to hammer out a deal on eliminating Syria's arsenal of chemical weapons.
US Secretary of State Hillary Clinton has slammed charges made by Republicans of a cover-up over the deadly Benghazi attack.
Hillary Clinton is due to return to work after a month-long absence caused by a series of health scares, including a blood clot in her head.
Secretary of State Hillary Clinton has taken the blame for any shortcomings in the handling of an attack last month on the US mission in Libya.
Secretary of State Hillary Clinton has denied that Washington was warned of an imminent attack in Libya.
US Republicans eagerly geared up for battle in Congress this week, warning Democrats of an aggressive push to slash spending.
Excitement is swelling across the United States and the world as Barack Obama prepares to be sworn in Tuesday.
In less than a week's time Malia and Sasha Obama will move into one of the world's most coveted residences, thrust back into the global spotlight.