Nygaardsvold's Cabinet in the context of "Occupation of Norway by Nazi Germany"

The occupation of Norway by Nazi Germany during the Second World War began on 9 April 1940 after Operation Weserübung. Conventional armed resistance to the German invasion ended on 10 June 1940, and Nazi Germany controlled Norway until the capitulation of German forces in Europe on 8 May 1945. Throughout this period, a pro-German government named Den nasjonale regjering ('the National Government') ruled Norway, while the Norwegian king Haakon VII and the prewar government escaped to London, where they formed a government in exile. Civil rule was effectively assumed by the Reichskommissariat Norwegen (Reich Commissariat of Norway), which acted in collaboration with the pro-German puppet government. This period of military occupation is, in Norway, referred to as the "war years", "occupation period" or simply "the war".

Halvdan Koht (7 July 1873 – 12 December 1965) was a Norwegian historian and politician representing the Labour Party.

Born in the north of Norway to a fairly distinguished family, he soon became interested in politics and history. Starting his political career in the Liberal Party, he switched to the Labour Party around the turn of the 20th century. He represented that party in the Bærum municipal council for parts of the interwar period. He was never elected a member of Parliament, but served nonetheless as Norwegian Minister of Foreign Affairs from 1935 to 1940, as part of the government-in-exile following Germany's invasion of Norway. In the latter capacity he sought to preserve Norway's neutrality in the Second World War, a decision that garnered him political infamy. Growing discontentment with Koht's political decisions ultimately led to his exit from the cabinet. After the war, however, he returned to his academic career track and wrote major works in the 1950s and 1960s.

Trygve Halvdan Lie (/liː/ LEE, Norwegian: [ˈtrʏ̂ɡvə ˈliː] ; 16 July 1896 – 30 December 1968) was a Norwegian politician, labour leader, government official and author. He served as Norwegian foreign minister during the critical years of the Norwegian government in exile in London from 1940 to 1945. He was the first secretary-general of the United Nations.