Leaders attending the Group of 20 summit in Pittsburgh will seek to forge agreements to buoy a global economic recovery and repair financial imbalances that contributed to the recession.

Backgrounder: North Korea is the latest member of the world’s still-exclusive nuclear club. But other aspirants are waiting in the wings.

Venezuela is trying to develop new markets for its oil at a time of increasing friction with its main customer, the United States. But a significant short-term shift in oil relations between Venezuel…

Angola, Africa’s top oil producer, is flush with money. Yet wealth remains concentrated in the hands of a very few, leaving the bulk of the population in poverty.

The U.S. government has boosted spending on international broadcasting since 9/11, expanding its reach to the Internet and satellite TV. But critics say these outlets have lost their focus.