U.S. battlefield nuclear weapons in South Korea were removed in 1991, but since then North Korea has conducted five nuclear tests and achieved alarming success in its ballistic missile program. Based on reports, the North has the capability to produce several dozen nuclear bombs.
Polling done by Gallup Korea has shown nearly 60 percent of South Koreans would support nuclear armament, according to Yonhap news agency. The largest support is found among residents age 60 and above.
If South Korea were to arm itself with nuclear weapons, China would likely protest and probably take the matter to the United Nations as a violation of the Non-Proliferation Treaty, of which South Korea is a signatory but not North Korea.
Yet there also are concerns South Korea getting its own nukes could trigger a wider U.S.-China war because if Seoul were to use the weapons against North Korea, the regime's longtime ally Beijing might respond with an attack of its own that might include targeting U.S. military bases in South Korea or the Asia-Pacific region.
Reference: CNBC
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