WASHINGTON — A high-ranking U.S. official stressed Tuesday that the U.S.-South Korea alliance is a “nuclear alliance,” reinforcing the South Korean government’s description of the two allies, after the United States and South Korea signed new deterrence guidelines last week. Vipin Narang, U.S. acting assistant secretary of defense for Space Policy, told VOA’s Korean Service in an exclusive interview that “when we formally extend nuclear deterrence to our allies, it is a nuclear alliance, and South Korea is an example of that.” Narang explained that it would be similar to what the United States has with the European allies through NATO. “NATO publicly says, for example, that so long as nuclear weapons exist, NATO will be a nuclear alliance. And the relationship with ROK, similarly, is a formal extension of U.S. nuclear,” he said, referring to South Korea with the abbreviated form of its official name, the Republic of Korea. “We commit to defend South Korea with all capabilities.” South Korean President Yoon Suk Yeol said earlier on Tuesday in a Cabinet meeting that South Korea’s alliance with the United States has been upgraded to a “nuclear-based alliance,” adding that the U.S nuclear assets will now be “specially assigned to missions on the Korean Peninsula” under the newly agreed guidelines between the two allies. On Thursday, Yoon met U.S. President Joe Biden on the sidelines of the NATO summit in Washington, reaffirming their commitments to the Washington Declaration unveiled in 2023, which outlines the two countries’ commitment to engage in deeper dialogue and information sharing to strengthen nuclear deterrence efforts on the Korean Peninsula. According to the joint statement released after the two leaders’ latest meeting, Biden reiterated that the U.S. commitment to extended deterrence to South Korea is backed by “the full range of U.S. capabilities, including nuclear.” In line with such a move, Narang, who co-chairs the Nuclear Consultative Group, a bilateral body set up by the United States and South Korea under the Washington Declaration, met his South Korean counterpart, Cho Chang Lae, in Washington last week and signed “the United States and Republic of Korea Guidelines for Nuclear Deterrence and Nuclear Operations on the Korean Peninsula.” The guidelines, according to the Department of Defense, provide principles and procedures to assist policymakers and military officials of both countries “in maintaining an effective nuclear deterrence policy and posture.” Narang emphasized that the guidelines would help the Nuclear Consultative Group (NCG) evolve in accordance with the threats faced by the U.S.-South Korea alliance. “The guidelines document is the not the end, it’s the beginning, and sort of sets up the NCG as an enduring body,” he said. “The NCG is a living body, and the work streams evolve with the threat environment and the capabilities, just as North Korea’s capabilities continue to expand and diversify.” However, he made it clear that only the U.S. president will be able to authorize the use and employment of U.S. nuclear weapons, while underscoring Washington and Seoul will be approaching the extended deterrence “as equal partners.” “We have extended deterrence relationships. We need conventional support from our allies,” he stressed. His remarks come amid growing skepticism in South Korea over the U.S. extended deterrence, especially after Russia and North Korea signed a defense pact, which indicated Moscow’s willingness to engage in full-fledged military cooperation with Pyongyang. An increasing number of South Korean people are calling for South Korea’s own nuclear weapons, arguing that the U.S.-ROK alliance’s existing deterrence strategy would not be enough to protect South Korea from the possible attacks from North Korea, if it joins hands with Russia. The acting assistant secretary of defense gave a strong warning against South Korea having its own nuclear weapons. “It would be in violation of the NPT (Nuclear Non-Proliferation Treaty),” Narang said, adding that South Korea would probably face international sanctions. He also suggested that Seoul would be “an international pariah” and would become vulnerable to North Korea’s nuclear attacks during the time it is pursuing nuclear weapons. Experts in Washington remained cautious about what the new guidelines could mean for the extended deterrence for South Korea. “It shows that the United States is taking seriously South Korea as a partner in all aspects of defense,” said Scott Snyder, president of Korea Economic Institute of America. Snyder told VOA’s Korean Service on Tuesday that the decision to employ a nuclear weapon should be made in a closely integrated manner between Seoul and Washington. “If it’s not integrated, the alliance will fail,” he said. He added that the decision will heavily depend on the U.S. inclination. Bruce Bennett, a senior defense analyst at the Rand Corporation, told VOA’s Korean Service on Tuesday that it is difficult to see the U.S.-South Korea alliance as a “nuclear alliance.” “If South Korea has been given a role in planning the nuclear options, yes, but the U.S. has been implying that that hasn’t occurred,” Bennett said. “If they are a nuclear alliance, then it ought to describe in what way it’s a nuclear alliance – is South Korea being included in planning how nuclear weapons will be used? That’s what President Yoon asked for. It’s not clear to me.”
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