The apocalyptic pronouncements from Pyongyang have a silver lining: They may be motivating the world to take unprecedented action against the North.
But the two women sentenced to 12 years in prison still face awful conditions. Their whereabouts since last week remain unknown.
A tougher stance toward Pyongyang may complicate efforts to negotiate the release of the two women, who were sentenced Monday to 12 years of hard labor.
The move is a response to the UN Security Council statement condemning North Korea's missile launch last week.
It threatened Wednesday to shut its border with South Korea, where activists have been launching giant balloons carrying leaflets.
The Yongbyon reactor could be operational again within a year.