President Barack Obama says he will seek vigorous climate-change policy. Efforts to curb greenhouse gases pose considerable economic pitfalls, as well as opportunities.

Political volatility among the world’s leading oil producers suggests deeper causes for recent price spikes.

International actors are redoubling efforts to restore Afghanistan’s agriculture sector and weaken the massive opium trade that helps fund the Taliban. But competing strategies and corruption could s…

A profile of the Doha round of World Trade Organization multilateral trade talks.

Backgrounder: Ongoing sectarian troubles and corruption threaten Nigeria’s future security.