China is monitoring for radiation along its border with North Korea, setting a 'level 2' emergency (2nd highest on their 4 point scale)
North Korea says it successfully detonated a hydrogen bomb test
- China has condemned the test
- As has Japan
- US Def Sec Mattis on North Korea - has threatened massive response
- US President Trump sent out a tweet warning the US might not trade with any country that does business with North Korea
