Rare submarine visit reminds North Korea of U.S. nuclear missiles out of sight, in range

“Placing nuclear weapons offshore and on submarines is actually a stronger deterrent in many ways,” said Duyeon Kim of the Center for a New American Security. “Deterrence is strengthened when the location of American strategic assets is unknown to the adversary as long as the adversary knows that these weapons exist.”

The USS Kentucky Ohio-class SSBN arrived in South Korea's southern port of Busan on Tuesday and wrapped up its visit on Friday, said a source with direct knowledge of its movements.

Read the full story and more from Reuters.