Now I Get It: North Korea’s quest to develop a hydrogen bomb

Fiery rhetoric and name-calling between President Trump and North Korea has motivated its leader, Kim Jong Un, to further develop and launch a nuclear weapon. The North Korean foreign minister said Pyongyang might test a hydrogen bomb over the Pacific Ocean. Experts say it’s a threat to be taken seriously, given North Korea’s six underground nuclear tests and a series of successful missile launches. So just how powerful and dangerous is a hydrogen bomb?