North Korean dictator Kim Jong Un is believed to have three children with his wife Ri Sol Ju.

There are few details on the kids, but they're believed to be between the ages of three and 10 years old.

The eldest child is believed to be a boy who is expected to one day succeed Kim.

Visit Business Insider's homepage for more stories.

Like much of North Korea, the personal and family life of its dictator Kim Jong Un is shrouded in secrecy.

The North Korean leader remains an object of wild speculation and curiosity throughout much of the western world, like reports this week that US intelligence indicated Kim recently underwent heart surgery and could even be incapacitated. The South Korean government denied the reports, but that hasn't tamped down the speculation.

Little is known about his wife, Ri Sol Ju, and even less is known about the three young children the couple is believed to have.

Most of the currently available information about the family comes from South Korea's National Intelligence Service. But former US basketball star Dennis Rodman has also spoken to media about holding one of Kim's children during one of his controversial visits to the Hermit Kingdom, though the details he provided have not been independently corroborated.

Here's everything we know.