When Norway was invaded by German forces in 1940, King Haakon VII escaped to Britain and a Norwegian exile government was set up in London.

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On Saturday, Prime Minister Jens Stoltenberg comforted victims and relatives alongside Norway's King Harald, Queen Sonja and Crown Prince Haakon in the town of Sundvollen, near Utoeya island.

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Crown Prince Haakon is married to Princess Mette-Marit.

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