A paramilitary officer stands guard before opening the gate at the Shanghai World Expo on Tuesday in Shanghai, China.
About 100 Communist Party supporters broke through the gates of the Acropolis, the city's chief ancient monument, and hung banners in Greek and English reading 'Peoples of Europe Rise Up.'
President Obama's stunning disclosure puts pressure on Russia to reciprocate. But Moscow relies much more heavily on its nuclear weapons arsenal for security and regional power.
European Union transportation authorities will create a new traffic control system to deal with crises like volcanic ash more effectively.
The newly approved Cape Wind project in Massachusetts will be closely watched, by both supporters and detractors, as it goes forward. Many see it as a barometer for the future of offshore wind energy in the US.
A bomb attack in a Mogadishu mosque this weekend failed to kill Fuad Shongole, a top leader of Somalia's Al Qaeda-linked Al Shabab militia. But the Somalia mosque bomb is taking fighting there to a new level of intensity.
Experts cast doubt on the Pakistan Taliban’s apparent claim to have planned the Times Square bombing and its threat to attack US cities.
Progressive Catholics and theologians in the US and Europe say the Vatican's model of a priest is outdated. The global sexual abuse scandal has sharpened the church's inner struggle over how to reform that model.