North Korea has a covert military base near the Chinese border that poses a “potential nuclear threat” to the United States mainland, according to new research

A California man has been sentenced to eight years in prison after admitting to shipping weapons and ammunition to North Korea that he said were to be used for a surprise attack on South Korea, authorities said Tuesday.

Shenghua Wen, 42, was sentenced to eight years in prison in connection with the scheme that earned him $2 million from North Korean handlers.

As the US and South Korea begin military drills this week, the Ukraine war has helped North Korea perfect the art of war — and that has implications for the rest of Asia.

When South Korean President Lee Jae Myung meets U.S. President Donald Trump next week for their first summit, he will be asked to pay more for the upkeep of American troops on the peninsula during talks set to be dominated by security issues and China.

Chinese citizen Shenghua Wen was sentenced to eight years in prison for conspiracy to export military equipment to North Korea while acting as an illegal foreign agent.

North Korea has built a secret military base near its border with China that may house Pyongyang’s newest long-range ballistic missiles, a Washington, D.C.-based think tank said.