Updated:Former basketball star Dennis Rodman apologized on Monday for not being able to help an American missionary detained in North Korea while he played there to celebrate the birthday of his friend and leader Kim Jong Un. "I'm sorry, I'm sorry I couldn't do anything," Rodman told media on his arrival at Beijing airport from a weeklong trip. "It's not my fault. I'm sorry. I just want to do some good stuff, that's all I want to do."