KING Charles' cancer was caught early and the whole country is hoping he can make a full recovery, British Prime Minister Rishi Sunak said, as messages of support for the 75-year-old monarch poured in from world leaders. Buckingham Palace revealed on Monday that Charles, on the throne for less than 18 months since the death of his mother Queen Elizabeth, was suffering from a "form of cancer" and would postpone his public engagements to undergo treatment. The king was remaining "wholly positive" and looking forward to returning to public work as soon as possible, the palace said. Charles' younger son…