Egyptian state media says the Hamas militants in Gaza and Israel have agreed to a cease-fire that's supposed to take effect on Thursday. From Jerusalem, Matt Gutman reports.

Today on The World: Experts say nuclear warhead plans found on the computers of Swiss weapons smugglers represent a serious potential proliferation risk; Violence persists in the Darfur region of Sudan, in spite of additional UN peacekeeping forces; and the Scottish owner of the internet domain name "Narnia.mobi" is sued by the estate of C.S. Lewis.

• Presidential candidates on Russia (Apr 3)
• Senator McCain's speech on foreign policy (Mar 26)
• Senator McCain visits Israel (Mar 19)
• Europe's take on the U.S. campaigns (Mar 5)
• Electronic voting lessons from abroad (Mar 4)
• Matthew Bell on the campaign trail in Ohio (Mar 3)
• How important is foreign policy, really? (Mar 3)
• Courting Latino voters in Texas (Feb 29)
• Natural born citizens (Feb 29)
• Ohio voters worry about global trade (Feb 29)
• World coverage of Super Tuesday (Feb 6)
• Egypt watches U.S. politics (Feb 6)
• Israel watches U.S. primaries (Feb 6)
• Absentee voters in Argentina (Feb 6)
• Gerry Hadden on overseas voters (Feb 5)
• American voters in Ireland (Feb 5)
• First time voters (Feb 5)
• Main issues for voters on Super Tuesday (Feb 4)
• Presidential candidates on climate change (Jan 28)

Swedish jazz pianist Esbjorn Svensson died this weekend at the age of 44. He led the popular trio EST. The World's Alex Gallafent has an appreciation.

For today's Geo Quiz, we're looking for a vast, surreal landscape in South America that's made up of salt. The answer is the Salar de Uyuni in Bolivia. Reporter Ruxandra Guidi takes us there.

Anchor Lisa Mullins speaks with BBC Ghana correspondent David Amanor. Amanor spoke with -- and listened to -- some young musicians in the capital Accra. They're there to audition for a chance at a scholarship for the Berklee College of Music in Boston.

For today's Geo Quiz, we're looking for a salty, surreal landscape in South America.

Qatar manages to remain friends with just about everyone in the Middle East. And lately the tiny Gulf country taken on the role of mediator -- most notably, in Lebanon. Ben Gilbert reports on Qatar's diplomatic balancing act.

The American Midwest isn't the only locale devastated by flooding in recent days. In southern China, torrential rains and overflowing rivers have forced more than a million people there to flee their homes. Anchor Lisa Mullins talks with The World's Mary Kay Magistad in Beijing.

While many of the world's top athletes have been training full time for the Beijing Olympics, one runner is doing it in his spare time. Reporter Todd Melby has the story of a sprinter who works at a junior high school in Minneapolis and is training to represent his native country, the Marshall Islands, in the Summer Games.