 Complete the following phrase:  According to intelligence sources quoted by Seymour Hersh, in early 2012 the CIA set up in co-operation with Turkey what it called the Rat Line, a covert operation to obtain and transport, using proxies and front companies, armaments from Libya to rebel groups in Syria via southern Turkey. The CIAs part in the operation reportedly ended as a result of the mass evacuation of CIA operatives from the American consulate in Benghazi, Libya, after the 