WASHINGTON, Dec. 31, 2014 – Pentagon officials confirmed today that a high-ranking member of the al-Shabab militant group in Somalia was killed in a Dec. 29 airstrike. The unmanned U.S. aircraft strike near Saakow, Somalia, killed Tahlil Abdishakur, chief of al-Shabab’s intelligence and security wing, officials said in a statement. Working from actionable intelligence, U.S....