The North Korean dictator posed for photos with an apparent mockup of the warhead. The country claims it could be mounted on a missile, but experts are skeptical.

North Korea's recent saber-rattling ratcheted up a notch Wednesday when the leader of the reclusive country claimed it had miniaturized nuclear weapons, then released photos of Kim Jong Un standing beside an apparent mockup of one of the devices.

North Korea / Via rodong.rep.kp

The country's KCNA news agency described the weapons as "miniaturized powerful nuclear warheads with a Korean-style structure of mixed charge." Despite the rhetoric, experts have questioned whether the rogue nation is capable of such technology.

The announcement of the miniature warheads comes just a day after the U.S. and South Korea began military exercises with thousands of troops in the region.

Last week, North Korea fired projectiles into the sea, apparently in response to new U.N. sanctions. In recent months the country has also detonated what it claimed was a hydrogen bomb and tested new rocket technology.

North Korea / Via rodong.rep.kp

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