Margaret Warner gets a behind-the-scenes look at the making of U.S. foreign policy from former State Department official Vali Nasr. His new book, "The Dispensable Nation: American Foreign Policy in Retreat," critiques the Obama administration's handling of Pakistan, Afghanistan and the Middle East.

In other news Friday, Russian officials announced that Syria has agreed "in principle" to attend an international peace conference on outlining a transition for new leadership. Also, in Kabul, Afghanistan, a guest house used by an international aid group was targeted by a suicide car bomber and five armed gunmen.

According to reports, U.S. drone attacks on militants in Pakistan, Yemen and elsewhere are conducted by both the CIA and the U.S. military, but will eventually be handled solely by the Defense Department. New York Times reporter Mark Mazzetti talks to Jeffrey Brown about the CIA's shifting role in the fight against terrorists.

The United States' largest threat no longer comes from the outside -- the Soviet Union and Nazi Germany of yore -- but from within, says foreign policy analyst and author Richard Haass.

UK security service MI5 asked London street attack suspect Michael Adebolajo if he wanted to work for them half a year ago, a childhood friend claims.

France is set to begin the first major stage of its military withdrawal from Mali, four months after sending troops to push Islamist rebels out the north.

A dancer alleged to have had paid sex as a minor with Italy's ex-PM Silvio Berlusconi tells a court she lied to investigators in 2010.

The Nigerian army says it has destroyed a number of camps used by militant Islamist group, Boko Haram, in the north-east of the country.

Elysha O'Brien's parents chose not to pass on Spanish, their native tongue, to their children.

Sports commentator Frank Deford says David Beckham's talents have been overlooked.

As happened in Newtown, Conn., teachers saved pupils' lives in Monday's tornado in Moore, Okla.

When Margot Adler found out a cousin had hidden from the Nazis in Amsterdam, she was stunned.