North Korea stirred up world unease Thursday, threatening attacks by a "smaller, lighter and diversified" nuclear force.
According to a Cable News Network report, North Korea warned "The moment of explosion is approaching fast."
As a symbol of the tension, North Korea closed a joint factory complex that was built eight years ago in a cooperative effort of North and South Korea.
The complex, called Kaesong, is 50 miles across the border into the north and employs about 50,000 workers. Most of the factories are owned by South Korean companies. A variety of products are made there and distributed around the world, including the United States.
Kaesong has been closed only once before, for a couple days in 2009 when tensions heightened.
North Korea also announced plans to restart a nuclear reactor it shut down five years ago.
Most observers believe that North Korea does not have the capacity to fire nuclear weapons, but does have ballistic missles, CNN reported.
North Korea has said that the West is trying to demolish its social system.
obsevers suspect that the North is posturing to solidy the leadership of Kim Jong Un.
The United States announced it would send ballistic missiles to U.S. naval and air bases in Guam.
U.S. Defense Secretary Chuck Hagel hopes "the North will ratchet this very dangerous rhetoric down," CNN reported.
Hagel said there is a responsible pathway for the North to get on a path to peace working with their neighbors, but they have got to be "a responsible member of the world community."
For the full CNN written report, click HERE.