In 1937, during the rise of Nazism in Europe, Doctor Guerrero took over as president, until he was forced to leave in 1940 by the Nazis. Precisely after the fall of the Netherlands, on May 17, 1940, the Nazis tried to take the Peace Palace of the Permanent Court of International in The Hague, but there they met the Salvadoran, the only judge who stayed with a group of Dutch officers. When a German general approached, the Presiding Judge told him: "The Court and its staff are inviolable. Only on my body can they enter the palace." For this and others before courage in defense of Universal Law, Dr. Guerrero was twice nominated for the Nobel Peace Prize.