A South Korean official has said the country's future nuclear-powered submarines, which the United States is helping to develop, will rattle North Korean leader Kim Jong Un.

Newsweek has contacted the North Korean Embassy in Beijing for comment via email.

Why It Matters

Facing North Korea 's development of nuclear weapons and missiles, South Korea has strengthened its preemptive and retaliatory strike capabilities , with its diesel-electric attack submarines playing a vital role in the country's "three-axis system" strategy.

During his visit to South Korea last month, U.S. President Donald Trump announced he had approved the treaty ally's plan to develop nuclear-powered submarines to boost the endurance of Seoul's underwater fleet, which he said would be built in Philadelphia

See Full Page