North Korea tests hydrogen bomb!

I know we have a large Korean community here so I'm anxious to hear what people are thinking about this.

The hydrogen bomb is reportedly small enough to fit on the head of a missile, and is many times more powerful than the atomic bombs used in Japan during WWII. The test caused a massive earthquake (6.3 scale) which shook buildings in China and Russia.

If America, South Korea, and Japan had a "line in the sand", I think North Korea just crossed it.