Buckingham Palace confirms King Charles III's cancer diagnosis, discovered during treatment for an enlarged prostate. The exact type of cancer remains undisclosed. The 75-year-old monarch commenced "regular treatments" and will defer public duties. Despite this setback, he remains optimistic about his treatment and aims to resume full duties soon. Further details regarding the cancer stage or prognosis are not disclosed. Both his sons have been informed, with Prince Harry planning to visit from the US. While pausing public events, King Charles will continue his constitutional duties, including meetings with the Prime Minister. A contingency plan involves appointing "counsellors of state" if necessary for official duties.