Kim Jong Un unveils a new 8,700-ton nuclear-powered submarine, escalating tensions in the Pacific. Learn how this stealth ...

North Korea on Thursday displayed apparent progress in the construction of a nuclear-powered submarine, with state media ...

North Korea state media photos showed a largely completed nuclear-powered submarine hull as leader Kim Jong Un condemned ...

New photos show North Korea's apparent progress in the development of a nuclear-powered submarine as Kim Jong Un condemns ...

North Korea released new images showing apparent progress on a nuclear-powered submarine as Kim Jong Un criticized South ...

North Korea on Thursday showed apparent progress in the construction of a nuclear submarine, with state media pictures ...

State media images reveal a largely completed hull as Kim Jong Un vows to strengthen the North's naval nuclear capabilities ...

A former Navy lieutenant commander and defense industry executive who was indicted for illegally leaking submarine design ...

North Korean leader Kim Jong Un observed construction of a submarine with his daughter, a potential heir, and oversaw the ...

Seoul wants to join the undersea naval elite – and has received the blessing of US President Donald Trump to do just that.