Caption
Dr. Alex Karp. (Wall Street Journal photo)
Politics and Government
Politics and Government
Caption
(Bruce Bennett/Getty Images)
Caption
(JIM WATSON/AFP/Getty Images)
Caption
A Federal law enforcement agent carries a pile of marijuana plants seized during a raid of a medicinal marijuana club June 22, 2005 in San Franciso, California. (Justin Sullivan/Getty Images)
Caption
U.S. Army soldiers from the 2-82 Field Artillery, 3rd Brigade, 1st Cavalry Division, one of the last American combat units to exit from Iraq on December 15, 2011. (Joe Raedle/Getty Images)
Caption
U.S. Secretary of Defense Chuck Hagel (C) speaks as President Barack Obama (L) and Vice President Joe Biden look on during a press conference announcing Hagel's resignation, November 24, 2014. (Chip Somodevilla/Getty Images)
Caption
(Joe Raedle/Getty Images)
Caption
(Alex Wong/Getty Images)
Caption
Sect. of State John Kerry (R) and Iranian Foreign Minister Javad Zarif (L) shake hands in Muscat on November 9, 2014. (NICHOLAS KAMM/AFP/Getty Images)
Experts
Bernard Haykel
Senior Fellow (Nonresident), Center for Peace and Security in the Middle East
Mary Kissel
Senior Fellow (Nonresident)
