Dennis Rodman sang “Happy Birthday” to North Korean leader Kim Jong Un before leading a squad of former NBA stars onto the court today at a Pyongyang stadium for a game Rodman said is part of his “basketball diplomacy” with the North that has been heavily criticised in the United States. Rodman dedicated the game to his “best friend” Kim, who along with his wife and other senior officials and their wives watched from a special seating area. The capacity crowd of about 14,000 at the Pyongyang…