Visit to NATO by William S. Cohen, US Secretary of Defense Brussels, Belgium 7 March 1997 Please credit NATO photos. William S. Cohen, US Secretary of Defense (centre) giving a press conference. (NATO Photo 745Kb Ref. no: 16007-21) William Cohen shaking hands with Secretary General Solana (right) upon his arrival in the Private Office. (NATO Photo 649Kb Ref. no: 16005-8)