Diệm's rule was authoritarian and nepotistic. His most trusted official was Nhu, leader of the primary pro-Diệm Can Lao political party, who was an opium addict and admirer of Adolf Hitler. He modeled the Can Lao secret police's marching style and torture styles on Nazi designs. Cẩn was put in charge of the former Imperial City of Huế. Although neither Cẩn or Nhu held any official role in the government, they ruled their regions of South Vietnam, commanding private armies and secret police. His youngest brother Luyện, was appointed Ambassador to the United Kingdom. His elder brother, Ngô Đình Thục, was the archbishop of Huế. Despite this, Thuc lived in the Presidential Palace, along with Nhu, Nhu's wife and Diệm. Diệm was nationalistic, devoutly Catholic, anti-Communist, and preferred the philosophies of personalism and Confucianism.