South Korea certain North has nuclear bombs

South Korea is certain North Korea has nuclear weapons and Seoul's best estimate is Pyongyang has produced one or two bombs, its defense minister said on Friday, amid reports that the North may be preparing a nuclear test. Another senior official said South Korea and China had agreed to cooperate in preventing the North from conducting a test, which would pose a grave situation in the region. Defense Minister Yoon Kwang-ing said he believed the North had one or two nuclear weapons, but his remarks in parliament on Friday were among the strongest yet on the North's possession of atomic bombs. "It is estimated that the North has one or two," Yoon told a parliamentary hearing when asked about the North's nuclear arsenal. When asked if the South has no doubt about the North's possession of a nuclear weapon, Yoon said: "That's correct."