North Korea conducts successful test of hydrogen bomb

North Korea has successfully carried out its first hydrogen bomb test, marking a major step forward in its nuclear development.The ‘hydrogen bomb test’ is likely to further North Korea’s international isolation by prompting a push for new, tougher sanctions at the United Nations and worsening Pyongyang’s already bad ties with Washington and its neighbours.

Pyongyang is thought to have a handful of crude nuclear weapons. The United States and its allies worry about North Korean nuclear tests because each new blast brings the country closer to perfecting its nuclear arsenal.
Since the elevation of young leader Kim Jong Un in 2011, North Korea has ramped up angry rhetoric against the leaders of allies Washington and Seoul and the U.S.-South Korean annual military drills it considers invasion preparation.