North Korean dictator Kim Jong Un believed to have turned 40

North Korean leader Kim Jong Un is believed to have turned 40 on Monday, but state media continued its decades of silence on his birthday. Mr Kim's birthday is believed to be January 8, though his secretive regime has never confirmed the exact date. The US government lists his birth year as 1984, which would make him 40 years old this year. The birthdates of Mr Kim's father and grandfather, Kim Jong Il and Kim Il Sung, who preceded him as rulers, are national holidays in the authoritarian state.