North Korean leader Kim Jong Un has supervised the test-firing of two types of new anti-air missiles, state media reports, displaying his expanding military capabilities as South Korea and the U.S. carry out joint military drills.

Kim has at least two and possibly three children, according to South Korean intelligence, but only one, Ju-ae, has made public appearances.

The newly-tested air-defense missiles "are very suitable for destroying various aerial targets," North Korean state media reported.