President Obama has announced several rounds of economic sanctions on Moscow, acting with European allies. Here are answers to some simple questions about sanction specifics.
Most people now live in cities, the UN declares, and more will follow, perhaps marking the 21st century as the Urban Era. Why the attraction to cities? Perhaps it shows rising hopes for progress.
Former foreign minister Abdullah Abdullah, who lost the last election to President Hamid Karzai, wants a comprehensive audit of last month's runoff election ballots.
The US has a long history of spying on its friends. Tensions between the US and Germany were raised last year by Edward Snowden's revelations of US eavesdropping on its European allies.
New fighting in CAR between Ugandan troops and Seleka rebels could also jeopardize what has been a bright spot in the fight against Joseph Kony's Lord's Resistance Army.