Tom Bowman

A congressional committee on Wednesday heard testimony from three witnesses about the events that led to deaths of four Americans at Benghazi in September, 2012. The Benghazi attack has become a political controversy — Republicans accuse the Obama administration of mishandling security there and of misleading the American public after the attack. One new allegation: that a four-person team set to deploy to Benghazi the night of the attack was told not to go.

A suspected drug kingpin from the tiny West African nation of Guinea-Bissau was captured on the high seas by agents from the U.S. Drug Enforcement Agency earlier this month, brought to Manhattan and is now awaiting trial.

The dramatic sting operation sheds light on what officials say is a growing national security threat: criminal networks teaming up with extremist organizations.

Defense Secretary Chuck Hagel, in his first major policy speech, laid out Wednesday how to deal with threats in an era of tight defense budgets.

Hagel has ordered the Pentagon to take a hard look at how many soldiers and sailors it needs and what types of weapons it buys. He says the Pentagon is at war with itself: There are competing and spiraling costs within the military — for aging weapons, and for health and pension benefits for military personnel and retirees.

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Several weeks ago, Gen. Martin Dempsey, the chairman of the Joint Chiefs, said the U.S. is planning what to do about Syria's vast chemical weapons program once Bashar Assad's regime falls. The Syrians are believed to have hundreds of tons of chemical agents, including sarin, one of the deadliest chemical agents. A few drops can be lethal.

So the central question is this: How can those sites be secured so they don't fall into the wrong hands?

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The U.S. will bring home 34,000 troops from Afghanistan by this time next year. President Obama is expected to announce the news tonight in his State of the Union address. That will cut the force in half and set the stage for the pullout of most of the remaining U.S. troops by the end of 2014. The drawdown from Afghanistan is just one of several developments today on Capitol Hill that will have a big impact on the Pentagon.

A Marine Corps review of the deadly Taliban attack on an allied base in Afghanistan last September found that some guard towers were unattended, and the insurgents "got lucky" by cutting through the fence at a remote area of the base in Helmand Province, Capitol Hill sources tell NPR.

Secretary of Defense Leon Panetta testified before a Senate committee Thursday about the September attack in Benghazi that killed the U.S. ambassador to Libya and three other Americans. Panetta was questioned about whether the U.S. response was fast enough and about why the U.S. military had not been better prepared for the possibility of an attack.