North Korean leader Kim Jong-un is claiming that his country has built hydrogen bombs.
 
The North’s state-run Korean Central News Agency (KCNA) on Thursday reported on Kim’s comments during a field guidance visit to an historic revolution site in Pyongyang.
 
The KCNA cited Kim as calling his country a "powerful nuclear state that can detonate the roars of nuclear and hydrogen bombs."
 
He said the bombs would strongly guard the North’s sovereignty and its people’s dignity.
 
Hydrogen bombs are deuterium-tritium fusion bombs, more destructive than fission weapons which employ uranium or plutonium.
 
During celebrations for the founding of its ruling party in October, the North said it developed strategic rockets with diversified and miniaturized nuclear warheads.
 
Despite the indirect reference to hydrogen bombs, experts say it’s hard to tell if the North currently has hydrogen bombs, but it could be in the developmental stage.