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Is North Korea really building walls to prevent an invasion from the South?

The barriers being built by North Korea along the inter-Korean border have prompted much speculation and analysis, even from the South Korean president ...
KUNC

Nuclear submarine arms race heats up between North and South Korea

North Korea's state media released photos Thursday of what it said was the hull of a nuclear submarine. Its leader denounced South Korea's plans to build its own subs as "an offensive act." ...
The Diplomat

North Korean Leader Inspects Building of Nuclear Submarine

According to the North’s state-controlled media, Kim Jong Un guided the building of a nuclear-powered strategic guided ...
AOL

The US will help South Korea build nuclear 'attack' submarines - here's what that means

South Korea's government has announced that it has finalised an agreement to build nuclear-powered submarines in partnership with the United States. The US has approved the "attack submarines" and ...

North Korea displays apparent progress in building nuclear-powered submarine

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