Jews." A front-page story in 1938 was an open letter to Mussolini criticizing the persecution of Jews, written by Kaj Munk, a prominent priest and playwright, who himself had though previously been sympathetic towards Mussolini and Hitler. In 1939, the paper rebuked the Danish government for signing a German-Danish treaty of non-aggression. In Jyllands-Postens own history of the paper, published on its website, the story of Kaj Munk's open letter to Mussolini and the paper's opposition to the Danish-German non-aggression treaty are mentioned, but not its sympathies towards Fascism and Nazism. The paper states: JP in this period turned itself firmly against the Soviet Union and world communism, while still maintaining a distance towards Germany, especially with its demands for a strengthened Danish military, and its support for the Danish minority in Southern Schleswig. In 1939 the paper, in opposition to the Copenhagen papers, went against the Danish-German non-aggression treaty. 1940–present Circulation almost doubled during World War II, despite censorship and paper rationing. The number of copies rose from 24,000 to 46,000. The edition announcing the Liberation of Denmark sold 102,000 copies. A number of the paper's employees were involved in the Danish resistance movement against the German occupation of Denmark. After the war, the paper continued to grow, and its ties and sympathy to business interests and industries grew stronger. The paper's nationalist-conservative line was replaced by a line supporting economic liberalism. In 1954, Jyllands-Posten became the first newspaper in Denmark to use colour photos in its layouts. In 1956, the paper implemented the Danish spelling reform of 1948, although headlines were written in old style until 1965. In 1959, First Secretary of the Communist Party Nikita Khrushchev reportedly cancelled an official visit to Denmark, on the grounds that Jyllands-Posten had published a number of articles highly critical of the Soviet Union. Jyllands-Posten'''s editorial line remained staunchly anti-Communist.Jyllands-Posten was affected by a series of strikes in 1956 and between 1973 and 1977. In 1977, the paper left the Union of Danish Employers, following a three-week-long strike against the introduction of new labour-saving equipment. In 1971, the paper bought out the joint stock company controlling it, and it has since been owned by a foundation. In the 1980s, the newspaper gradually increased its number of foreign correspondents, until finally stationing more than 20 journalists around the world. In 1982, Jyllands-Postens Sunday edition became the largest Sunday paper in Denmark. The