Today on The World: President Obama refocuses the US mission in Afghanistan; Congolese rebel leader Laurent Nkunda is arrested by his former allies in Rwanda; And we meet a Grammy Award winner -- German bass-baritone Thomas Quasthoff.

Anchor Lisa Mullins speaks with actor Benicio del Toro about his role in the upcoming film, "Che". Del Toro co-produced the film...and selected a song by Cuba's Silvio Rodriguez to close the first part. We stay in Cuba to find the answer to today's Geo Quiz. The answer is Santa Clara, capital of the Cuban province of Villa Clara and the site of a key battle for Che Guevara and the Cuban Revolution.

Our daily geography quiz.

Reporter Heba Aly visits a barbershop near Khartoum, Sudan that's renamed itself the "Barak Obama Salon." Business is apparently booming.

Barack Obama began to downplay his international roots while on the campaign trail. Now his African heritage and multi-ethnic family are again part of his narrative. The World's Carol Hills has the story.

Anchor Lisa Mullins speaks with Britain's Attorney General Patricia Scotland. She's Britain's first black and first female attorney general.

Reporter Linda Gradstein reports on how Israeli officials are preparing for an expected wave of lawsuits accusing Israeli soldiers of committing war crimes in Gaza.

The World's Quil Lawrence reports on conditions in Gaza after Israel's three-week military campaign. Tens of thousands of people are homeless, and much of the infrastructure is in ruins.

Gaza conflict

John Radsan, a former CIA assistant general counsel, tells anchor Lisa Mullins it won't be easy for President Obama to overhaul U.S. treatment of terror suspects.

President Obama today signed an executive order to close the Guantánamo Bay prison within a year. The World's Katy Clark reports on how President Obama's move is being received abroad.

Video: Obama signs executive order

Katy Clark's Guantánamo stories