North Korean dictator Kim Jong-un grinned while he sat on a tank as his teenager daughter drove him on the war machine. Kim Ju Ae , believed to be around 13, has been pictured more with her father at official events as the unpredictable despot appears to have chosen her as his heir. The duo were snapped in North Korea's latest display of military strength - a large-scale military drill. The teenage girl's head was seen peering out from the front seat of the massive tank while her dad calmly sat