Kim Jong Un Celebrates Unconfirmed Birthday While U.S. Investigates Unconfirmed Hydrogen Bomb

— -- Putting candles on Kim Jong Un’s birthday cake this year won’t be an easy task because no one really knows how old the North Korean leader is turning.

While his birthday is believed to be Jan. 8, the age and life of the "dear leader" are difficult to pin down. He is reportedly in his 30s.

All that international watchers know about the mysterious leader is what he releases through state-controlled media and the publicity surrounding some of his more famous supporters.

It was a busy week in the secretive world of North Korea. The country claimed it had successfully tested a hydrogen bomb, but U.S. officials said that was not likely.

To find out more about Kim Jong Un watch the video above.