Increased violence by the radical Islamist group Boko Haram threatens to ignite a wider Muslim-Christian conflict in Nigeria. Africa's most populous country also continues to face persistent problems with the economy and corruption.
For the president, commando raids and drone attacks are part of a new focus on "low-cost, small presence" military tactics. There have been several recent successes, though analysts are still debating the legality and long-term effectiveness.
Chinese forces opened fire on Tibetan protesters this week, killing up to four and wounding more than 30, say Tibetan rights groups. The protests are among the largest against Chinese rule in nearly four years and were inspired in part by a disturbing trend: Tibetans setting themselves on fire.
Renee Montagne talks to Nariman Behravesh, chief economist at IHS Global Insight, about key issues dominating this year's World Economic Forum in Davos, Switzerland. With Europe on the brink of recession, the mood at the meeting is not as upbeat as it was last year.
Some emerging democracies in North Africa are looking to Turkey as a potential model. But critics say the country is jailing "unfriendly" journalists and using the slow-moving justice system to stifle dissent.
Faced with new economic sanctions from the U.S. and Europe, Iran's currency, the rial, seems to be in free fall. Several factors seem to be at work, and analysts say one of them could be government manipulation of the currency market.
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