Trump after North Korea test: Pyongyang 'only understands one thing'
The explosion of what North Korea said was an advanced hydrogen bomb caused residents across the border in China to flee their homes, fearing an earthquake.
North Korean leader Kim Jong Un provides guidance on a nuclear weapons program in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang September 3, 2017.(photo credit: KCNA/VIA REUTERS)ByREUTERSUpdated: