Roosevelt denied that there were any negotiations for surrender taking place in Switzerland. Dulles, however appears to have made, apparently at his own discretion, a verbal agreement to protect SS General Wolff from prosecution at the Nuremberg Trials as they worked out details of surrender. Although Switzerland was neutral during World War II, the Swiss intelligence officer Max Waibel and the school director Max Husmann arranged for the meetings. Prime Minister Winston Churchill was following the discussion closely, and said he believed that "misunderstandings" with the Soviets were resolved with Roosevelt's death on 12 April. Churchill cynically referred to the negotiations as Operation Crossword, apparently because he found them puzzling.