US President Donald Trump wished North Korea’s Kim Jong Un a happy birthday, Seoul said yesterday -- with nuclear talks deadlocked and six years after former Chicago Bulls star Dennis Rodman serenaded Pyongyang’s leader. North Korea has never officially confirmed Kim’s age or date of birth, but Rodman’s breathy Marilyn Monroe-style performance of “Happy Birthday” took place before an exhibition basketball match in Pyongyang on January 8, 2014. In a sanctions document, the US Treasury has said Kim was born on that day in 1984, which would make him 36, but there is speculation he could be a year or two older.