Photos of North Korea's uranium enrichment facility may show an undeclared site for building nuclear bombs just outside of its capital, analysts said.

North Korea​ offered a rare glimpse into a facility to produce weapons-grade uranium as state media reported leader Kim Jong Un called for "exponentially" more nuclear weapons.

New pictures of North Korean leader Kim Jong Un touring what state media said is a uranium enrichment facility have given an extremely rare glimpse inside the isolated nation’s closely guarded nuclear weapons program.