North Korea has warned that U.S. approval for the South to build a nuclear-powered submarine will set off a nuclear weapon "domino" effect and trigger a “hot” arms race.

Why It Matters

North Korea has pushed ahead with its development of nuclear weapons and the missiles with which to strike its perceived enemies, including the United States, despite sanctions and efforts over the years to engage it in negotiations in exchange for sanctions relief.

Pyongyang's warning comes after the leaders of both the U.S. and North Korea suggested they could meet to renew the dialogue that they began during President Donald Trump’s first term in office.

What To Know

Trump said after talks with South Korean President Lee Jae Myung late last month that he had given approval for South Korea to bui

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