Adel al-Jubeir, shown in this 2004 photo, is Saudi Arabia's ambassador to the U.S. and was the target of an Iranian assassination plot, according to the U.S. government.

Ayman al-Zawahiri (shown here in a still image posted online by al-Qaida in July) replaced Osama bin Laden at the top of al-Qaida's leadership. Some argue that eliminating a few key leaders would significantly weaken the group; others say the more dangerous threat — from al-Qaida affiliates — would be unaffected by changes in the group's core leadership.

The Congressional Research Service estimated direct U.S. banking exposure in troubled European economies at $641 billion. U.S. banks say the amount is much lower.

Victims of the plague are consigned to a communal burial during the Plague of London in 1665.

Apple's new iPhone 4S, left, hits the market Friday — where it faces still competition from the speedy Android Bionic, right.

Chapman Corp. is expanding to take advantage of extra business it expects to get in coming decades because of increasing production in the Marcellus Shale play. Jeff Brady/NPR hide caption

Ali Madaan, 45, is one of the Bedouin guards protecting the al-Midan station in Egypt's northern Sinai. The natural gas pipeline there has come under repeated attacks.