Norway's Crown Princess Mette-Marit speaks during this year's Fosse Lecture at the Palace, in Oslo, Norway, April 23, 2026. NTB/Javad Parsa via REUTERS OSLO, June 17 (Saudi Arabia Breaking News) - Norway’s Crown Princess Mette-Marit has undergone a successful lung transplant and will remain in hospital for several weeks as she begins recovery, Reuters reported, citing doctors at Oslo University Hospital. The 52-year-old wife of Crown Prince Haakon, heir to the Norwegian thron