U.S. Secretary of State Hillary Rodham Clinton talks with Sultan Qaboos bin Sa'id at the sultan's palace in Muscat, Oman, on Wednesday, Oct. 19, 2011. Mrs. Clinton personally thanked the sultan for his help in securing the release of three American hikers detained in Iran. She later arrived in Afghanistan on an unannounced visit. (AP Photo/Kevin Lamarque, Pool)

Photo by: KEVIN LAMARQUE

U.S. Secretary of State Hillary Rodham Clinton talks with Sultan Qaboos bin Sa'id at the sultan's palace in Muscat, Oman, on Wednesday, Oct. 19, 2011. Mrs. Clinton personally thanked the sultan for his help in securing the release of three American hikers detained in Iran. She later arrived in Afghanistan on an unannounced visit. (AP Photo/Kevin Lamarque, Pool)