Senate Foreign Relations Chairman John Kerry said the United States needs to use “hard-nosed diplomacy” with Iran.

Dueling GOP resolutions demanding U.S. support for anti-government forces in Syria could be merged into a single piece of legislation within the coming weeks. 

An Obama administration official on Wednesday said he was not aware of any "secret deal" on missile defense.

The Defense secretary Tuesday acknowledged polls showing the public tired of war, but said Washington would not abandon its mission.

The Defense Department has no plans to stop supplying Russian-made military hardware for countries like Afghanistan, despite congressional demands to stop.

More than 40 Republican senators signed onto a letter to President Obama Tuesday that pushed him not to reduce the U.S. nuclear arsenal in the wake of his comments to Russian President Dimitry Medvedev asking for “flexibility” on missile defense.

The 43 GOP senators said they would oppose any efforts by the administration to limit U.S. missile defense capabilities or pursue nuclear arms reductions.

The senators’ letter, headed up by Minority Whip Jon Kyl (R-Ariz.), was the latest Republican criticism of the president for his comment to Medvedev that he needs “space” and will have more “flexibility” after the election.

The GOP senator said Russian President Dmitry Medvedev’s slam on Mitt Romney shows the Russians' preference for president in 2012.

The Pentagon is rewriting the book on how it defends against and possibly responds to cyberattacks against U.S. targets, the top uniformed officer in charge of the effort told Congress on Tuesday. 

Defense Secretary Leon Panetta is pushing for congressional funding to ship more Iron Dome missile defense systems to Israel.