SEOUL—The U.S. strikes on Iran’s nuclear facilities unfolded half a world away from North Korea. But for dictator Kim Jong Un, the attacks were a clear lesson: Nuclear weapons are critical for ...

North Korea is estimated to have around 50 nuclear warheads and enough fissile material for as many as 90. Kim's emphasis on expanding this capability—along with frequent ballistic missile tests ...

North Korea's leader Kim Jong Un (C) waves as he stands beside China's Chairman of the Standing Committee of the National People's Congress Li Zhanshu (center R) during the Arirang Mass Games in ...

North Korea relaunches 5,000-ton warship after May's botched launch, with Kim Jong Un calling the accident a "serious criminal act" while promising more naval vessels ...

But for North Korea’s leader, Kim Jong-un, America’s airstrikes on Iran’s aspirational nuclear infrastructure must have reinforced what he has long held to be true: that possessing nuclear ...

President Donald Trump and North Korea's Kim Jong Un held their second summit in Hanoi, Vietnam, but the negotiations were abruptly halted and no agreement was reached.

Today, North Korea’s secretive dictator oversees an isolated society and command economy, portraying himself as the benevolent protector of a nation under siege from hostile foreign powers.

The strikes potentially hardened Kim Jong Un’s determination to hold on to—and expand—his nuclear arsenal as a deterrent to any attack on North Korea.

North Korean Supreme Leader Kim Jong Un has vowed to continue building his UN-sanctioned nuclear arsenal, citing the "grave threat" posed by the U.S. and its allies, according to the U.S. Director ...