Vermont Sen. Bernie Sanders, an independent, speaks during a December 2012 news conference on Capitol Hill. Sanders said recently he'd consider running for president if no other progressive candidate steps up. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

This photo taken on Nov. 9 and released on Nov. 30 by North Korea's official Korean Central News Agency shows American Merrill Newman inking his thumbprint onto a written apology for his alleged crimes both as a tourist and during his participation in the Korean War. KCNA/AFP/Getty Images hide caption

itoggle caption KCNA/AFP/Getty Images

Brooklyn Nets head coach Jason Kidd yells to his team in the second half of an NBA basketball game against the Detroit Pistons, on Nov. 24 in New York. Kathy Willens/AP hide caption

itoggle caption Kathy Willens/AP

Glasgow resident Paul Watt, 48, crouches near a police cordon in Glasgow on Saturday. Watt was a regular patron of the pub hit by an out-of-control police helicopter. Andy Buchanan /AFP/Getty Images hide caption

itoggle caption Andy Buchanan /AFP/Getty Images

Japanese Coast Guard vessels sail alongside Japanese activists' fishing boat, not in photo, warning the activists away from a group of disputed islands called Diaoyu by China and Senkaku by Japan. Emily Wang/AP hide caption

itoggle caption Emily Wang/AP