SEOUL — President Yoon Suk Yeol of South Korea said for the first time on Wednesday that if North Korea’s nuclear threat grows, South Korea would consider building nuclear weapons of its own or ask the United States to redeploy them on the Korean Peninsula.
Speaking during a joint policy briefing by his defense and foreign ministries on Wednesday, Mr. Yoon was quick to add that building nuclear weapons was not yet an official policy. He stressed that South Korea would for now deal with North Korea’s nuclear threat by strengthening its alliance with the United States.
Such a policy includes finding ways to increase the reliability of Washington’s commitment to protect its ally with all of its defense capabilities, including nuclear weapons.
Mr. Yoon’s comments marked the first time since the United States withdrew all of its nuclear weapons from the South in 1991 that a South Korean president officially mentioned arming the country with nuclear weapons. Washington removed its nuclear weapons from South Korea as part of its global nuclear arms reduction efforts.
“It’s possible that the problem gets worse and our country will introduce tactical nuclear weapons or build them on our own,” said Mr. Yoon, according to a transcript of his comments released by his office. “If that’s the case, we can have our own nuclear weapons pretty quickly, given our scientific and technological capabilities.”
South Korea is a signatory of the Nuclear Nonproliferation Treaty, or NPT, which bans the country from seeking nuclear weapons. It also signed a joint declaration with North Korea in 1991 in which both Koreas agreed not to “test, manufacture, produce, receive, possess, store, deploy or use nuclear weapons.”
But North Korea has reneged on the agreement by conducting six nuclear tests since 2006. Years of negotiations have failed to remove a single nuclear warhead in the North. (American and South Korean officials say that North Korea could conduct another nuclear test, its seventh, at any moment.)
ImageA photograph provided by North Korean state media showed the launch of a new intercontinental ballistic missile in November.Credit...Korean Central News Agency, via Agence France-Presse — Getty Images
As North Korea vowed to expand its nuclear arsenal and threatened to use it against the South in recent months, voices have grown in South Korea — among analysts and within Mr. Yoon’s conservative ruling People Power Party — calling for Seoul to reconsider a nuclear option.
Mr. Yoon’s comments this week were likely to fuel such discussions. Opinion surveys in recent years have shown that a majority of South Koreans supported the United States redeploying nuclear weapons to the South or the country’s building an arsenal of its own.