Stronger, Faster, Higher: How North Korea Built a Fearsome Missile Arsenal

The warheads of tactical nuclear weapons have less explosive power but are meant for battlefield use, attacking specific targets relatively close to the launch point.

Targeting U.S. bases in South Korea with such weapons makes sense because the North Korean military does not have enough conventional warheads to meaningfully damage such facilities and prevent a conventional U.S. strike on North Korea, said Duyeon Kim, a North Korea expert at the U.S.-based Center for a New American Security.

"It would now be able to do so, while reserving its ICBMs and thermonuclear bombs to deter the United States from retaliatory annihilation of North Korea,” she said.

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