North Korean leader Kim Jong Un toured another four missile and launch vehicle factories in recent days, according to state media, and NK Pro analysis shows that several of the facilities have received substantial upgrades to push forward the mass-production of weapons targeting South Korea.

Kim’s latest factory visits come after he inspected five plants producing nuclear missiles and their delivery systems earlier this month. But while those facilities were located near Pyongyang and a munitions hub in the north, this time Kim traveled to factories around Hamhung on the east coast.

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