SEOUL, South Korea (AP) -- - North Korea is following up its nearly daily threats against the U.S. and South Korea with promises to restart a nuclear reactor that can make a bomb's worth of plutonium a year.
The plutonium reactor was shut down in 2007 as part of international nuclear disarmament talks that have since stalled.
Meanwhile, the United Nations chief says he fears North Korea is on a collision course with other nations that could lead to war.
U.N. Secretary-General Ban Ki-moon says the isolated Asian nation appears to be "on a collision course with the international community" amid rising tensions on the Korean Peninsula.
Ban, a former South Korean foreign minister, says, "the current crisis has already gone too far" because of escalating tensions raised by North Korea's threats of war almost daily against the United States and South Korea.
He said international negotiations are urgently needed but he is "convinced that no one intends to attack" North Korea.
Pyongyang has sought disarmament-for-aid talks with Washington and more domestic loyalty by portraying North Korean leader Kim Jong Un as a powerful commander.