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5d ago

North Korea Denounces U.S. Sub’s Busan Port Call, Vows Countermeasures

Seoul describes the USS Greeneville’s stop as routine resupply that reinforces naval cooperation with the United States.

This Feb. 10, 2025, file photo shows the nuclear-powered submarine USS Alexandria docking at a naval base in the southeastern port city of Busan. (Yonhap)
The nuclear-powered submarine USS Greeneville arrives at a naval base in the southeastern port city of Busan on Dec. 23, 2025. (Yonhap)
The nuclear-powered submarine USS Greeneville arrives at a naval base in the southeastern port city of Busan on Dec. 23, 2025. (Yonhap)
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Overview

  • The Los Angeles-class USS Greeneville entered the Busan naval base on Dec. 23 to replenish supplies and give its crew rest, according to South Korea’s Navy.
  • North Korea’s defense ministry labeled the entry a grave security threat and an act escalating regional tensions.
  • Pyongyang said it would consider countermeasures to U.S. “nuclear muscle flexing,” with timing and method chosen under principles of symmetry or asymmetry.
  • The statement tied the visit to Washington’s extended deterrence commitments and Seoul’s interest in nuclear-powered submarines, and pledged faster development of strategic retaliatory capability.
  • The port call was the Greeneville’s fourth visit to South Korea and the first U.S. nuclear-powered submarine visit since President Lee Jae Myung took office, following a similar USS Alexandria stop in February.