Music was interspersed at times by coordinated chants , while military officials could be seen saluting from vehicles that drove past tanks lined up in the square . NEW : Kim Jong Un touts the importance of the revolution begun by his grandfather . The North Korean leader has been in power for 17 years and is believed to be aged about 70 - but he still looks young enough to have a younger brother who could take over if necessary. He stresses the military 's significance and vows citizens wo n't starve again . He spoke during a celebration in Pyongyang celebrating Kim Jong Un 's birth 100 years earlier .
NEW : Kim Jong Un touts the importance of the revolution begun by his grandfather . The North Korean leader has been in power for 17 years and is believed to be aged about 70 - but he still looks young enough to have a younger brother who could take over if necessary. He stresses the military 's significance and vows citizens wo n't starve again . He spoke during a celebration in Pyongyang celebrating Kim Jong Un 's birth 100 years earlier .