The State Department announced Wednesday that it has added two people to the federal list of designated terrorists, one of whom was once detained at Guantanamo Bay military prison. Ayrat Nasimovich Vakhitov, one of the newly added jihadists, was a former detainee at Guantanamo for less than two years from June 2002 until February 2004 before being turned over to Russian officials in his home country. Turkish authorities recently arrested Vahkitov in connection with the June 29 suicide bombings at Istanbul’s Ataturk airport that killed 42 people. While no group has claimed responsibility for the attack, U.S. and Turkish authorities...