The prosecution of a Somali teenager accused of leading a pirate attack on an American cargo ship off the coast of Africa was taken off the fast track Thursday after a lawyer said more time will be needed to translate some Somali recordings into English. Abdiwali Abdiqadir Muse appeared briefly in U.S. District Court in Manhattan, where he was brought after his arrest aboard the U.S.-flagged Maersk Alabama in April. Authorities say Muse was the only surviving pirate of a group that he led in an attack off the coast of Africa on the cargo ship, which was carrying humanitarian...