Aisha Khan AL - ASSAD, AL QAEDA, ASIA, BASHA, BASHAR AL - ASSAD, CEASEFIRE, CIVILIAN CASUALTIES, CONFLICT, DAMASCUS, DEIR AL - ZOUR, GAZA, GAZA STRIP, GOLAN HEIGHTS, HAYAT TAHRIR AL - SHAM, HOMS, ISRAEL, JERUSALEM, JORDAN, LEBANON, MIDDLE EAST, MILITARY OPERATIONS, NORTH AMERICA, PHILIPPINES, RAJA ABDULRAHIM, RAJA ABDULRAHIM THOMAS FULLER, SYRIA, THE TIMES, UNITED NATIONS, UNITED STATES, WAR Syrian Rebel Gains Prompt Regional Border Closures Amid Rising Tensions