Top news: Senior al Qaeda leader Abu Yahya al-Libi may have been killed in a drone strike in Pakistan on Monday. Tribal sources in North Waziristan say Libi was either killed or injured in a drone strike on a truck, which killed at least 15 people. A militant commander in North Waziristan has denied Libi's death. U.S. officials have confirmed that Libi was the target of the attack. 

Libi is believed to be al Qaeda's deputy for Pakistan operations and has been described by some as number two to current al Qaeda leader Ayman al-Zawahri. The Libyan-born cleric was falsely reported dead in another strike in December, 2009. He rose to prominence after escaping the U.S. detention center at Bagram Air Base in Afghanistan in 2005 and went on to star in numerous recruiting videos, including one last year urging Libyans to overthrow Muammar al-Qaddafi.

The strike comes shortly after recent revelations about the scope of the U.S. drone program, including a "kill list" personally approved by President Barack Obama. The U.S. has reportedly launched three attacks on the Afghanistan-Pakistan border between Saturday and Monday, killing nearly 30 people. The strikes come during contentious talks with Pakistan over the closed NATO supply lines into Afghanistan.

China: The Shanghai Stock Exchange appears to have marked the anniversary of the Tiananmen Square crackdown with a subtle form of protest.