To Republican U.S. presidential contenders, North Korea¡¯s claim that it tested a hydrogen bomb may further make the 2016 race what they dearly want it to be: a referendum on President Barack Obama¡¯s foreign policy and, by extension, Hillary Clinton¡¯s.

For months, these Republicans have liked to say the world is ¡°on fire,¡± pinning the conflicts in Iraq and Syria, the attacks in Paris and San Bernardino, California, and the recent tensions between Iran and Saudi Arabia on Obama¡¯s administration and Clinton¡¯s stint as his secretary of state from 2009 to 2013.

Now, they can add North Korea to the threats they say face American voters.