Intelligence obtained by South Korea suggests that its neighbor, North Korea, has received a nuclear reactor from Russia for the development of its submarine fleet.

Newsweek has emailed the Russian defense and foreign ministries for comment. North Korea 's embassy in Beijing did not immediately respond to a request for comment.

Why It Matters

Russia and North Korea formed a strategic partnership last year, committing both sides to mutual military aid. Pyongyang has provided troops and munitions to support the Kremlin's war in Ukraine in exchange for Moscow's military equipment .

In addition to its nuclear and missile developments, North Korea has been bolstering its naval force by building a nuclear powered guided-missile submarine and two 5,000-ton destroyers to coun

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