North Korea's new leader has delivered his first major public speech on the occasion of the centenary of its founder's birth, calling for a push to "final victory" at a mass military parade in the country's capital.

Kim Jong-un, the third Kim to rule North Korea, read monotonously from a script in Pyongyang's central square on Sunday after marching soldiers and sailors demonstrated the North's military power.

In a move that indicated Kim would stick to the "military-first" policies that have put North Korea on the verge of nuclear weapons capacity, he lauded his grandfather, Kim Il-sung, and his father, Kim Jong-il, as the "founder and the builder of our revolutionary armed forces".

Al Jazeera's Harry Fawcett reports from Seoul, South Korea's capital.