Sure, why not

SEOUL, SOUTH KOREA No longer sure they can rely on the United States, an increasing number of South Korean lawmakers say their country should develop its own nuclear arsenal to deter an attack by Kim Jong Un, their belligerent neighbor to the north.North Korea’s rapid missile advances, including successful tests of intercontinental ballistic missiles (ICBMs) in July and again on Friday, are reviving calls for South Korea to assert its “nuclear sovereignty.” South Koreans are wary of President Donald Trump’s isolationist rhetoric and his calls for Asian allies to shoulder more of the defense burdens borne by the U.S. military.“Trump’s ‘America-first’ policy has triggered this kind of public sentiment,” said Moon Chung In, a top national security adviser to South Korean President Moon Jae In. Trump also has wavered on his commitment to defending South Korea, he said, including suggesting during the campaign that South Korea and Japan should develop their own nuclear arsenals.

And US engineers can help, just like Russian engineers helped the Dim Kim Son.