Use of armed force in Libya and Bahrain, the question of a no-fly zone, as well as the role of oil, make the choices for Obama much tougher than during Egypt's revolution.
The intervention of Saudi forces has escalated tensions between Bahrain's protesters and the country's Sunni rulers, leaving at least one dead and drawing criticism from Iran.
A Christian Science perspective: How we can support needed change in Egypt, Libya, and Tunisia and also contribute to maintaining stability.
A cricket fan cheers as he waves Zimbabwe's national flag during the rain interruption during the Cricket World Cup match between Pakistan and Zimbabwe in Pallekele, Sri Lanka.
A massive earthquake and tsunami have accomplished what Japan's fiscal policy and central bank could not. Rebuilding a large swath of Japan will stimulate domestic growth and global demand, energy-efficient technologies, while helping to integrate China and Japan.
Secretary of State Hillary Clinton will continue on to Egypt and Tunisia in her first trip to address the Arab revolutions. But the window for foreign assistance to Libya is quickly closing.
The optimism of a few weeks ago that Col. Muammar Qaddafi would be ousted by a flexing of people power similar to the revolutions in Egypt and Tunisia is now a distant memory.
Cargo containers are strewn about in Sendai, northern Japan, Saturday, March 12. Japan launched a massive military rescue operation Saturday after a giant, earthquake-fed tsunami killed hundreds of people and turned the northeastern coast into a swampy wasteland, while authorities braced for a possible meltdown at a nuclear reactor.
Regime change may not come swiftly to Gulf countries such as Saudi Arabia, where protesters have called for a 'Day of Rage' today, but a revolution of a different sort is taking place.
In a rare speech, King Mohammed VI outlined reforms that include a more independent judiciary, a move to direct local elections, and greater human rights.