Kim Jong-un took on the mantle of North Korea's supreme leadership with little political or military experience behind him. Kim Jong-il, North Korea's "Dear Leader", was in the process of grooming him as his successor when he died in December 2011. Immediately after his father's death, the younger Kim was hailed as "the great successor". He was named head of the party, state and army within a fortnight of his father's death.
Since then, he has shown he is committed to the advancement of North Korea's weapons programme, ordering four nuclear tests and several missile tests.