Nuclear War
Leader Kim Jong Un inspected the bomb, which can be mounted to an intercontinental ballistic missile.
"I worry frankly about the access to nuclear codes."
If incendiary bluster slides into military conflict, the populations of South Korea and Japan are in harm’s way.
Beijing suspects that Washington wants to weaken China in the region by exploiting friction between China and its troublesome neighbor.
WHAT'S HAPPENING
The more stridently Trump says he is going to stop North Korea, the worse it looks when he fails, and the more Beijing stands to gain.
Tensions with North Korea have brought the threat of nuclear war back -- but nukes have impacted international politics for decades.
It's the first time Korean-American elected officials have spoken in one voice on the issue.
President Donald Trump has escalated his war of words with North Korea following its successful completion of an intercontinental ballistic missile test.
"If Kim Jong Un were crazy and irrational, North Korea wouldn’t exist in 2017."