Secretary of Defense William Cohen, accompanied by National Security Advisor Samuel Burger (left) and Secretary of State Madeleine Albright (right), speaks during a press conference, held July 8, 1997, at the Miguel Angel Hotel, Madrid, Spain. The three policy leaders talked to reporters about the historic decision, made earlier in the day at the NATO summit, to invite Poland, Hungary, and the Czech Republic, three former members of the now defunct Warsaw Pact, to begin accession negotiations to join the NATO alliance