Defense Minister Yoon Kwang-ung says North Korea is believed to possess at least one or two nuclear weapons.

During a parliamentary questioning session of government ministries Thursday, Yoon said the government believes the communist North likely made one or two nuclear weapons with plutonium it extracted in the early 1990s.

Yoon, however, stressed that Seoul has a strategic deterrent against the North Korean nuclear threat in the nuclear umbrella of the United States.