US deterrence doctrine increasingly puts South Korea in China’s crosshairs



Analysis US deterrence doctrine increasingly puts South Korea in China’s crosshairs Pentagon official’s testimony ties ROK arsenal to broader regional deterrence, not just efforts to counter North Korea Jeongmin KimOctober 10, 2025 SHARE COPY LINK FACEBOOK X LINKEDIN MASTODON U.S., South Korean and Japanese fighters escort a U.S. B-52H bomber during trilateral drills, Oct. 22, 2023. \| Image: U.S. Air Force photo by Senior Airman Karrla Parra Washington has signaled that it no longer views South Korea’s expanding military capabilities as serving only to deter North Korea but also to reinforce U.S. efforts to contain China. This shift, articulated by U.S. deputy assistant secretary of defense for East Asia John Noh ahead of his Senate confirmation hearing this week, redefines Seoul’s strategic role in the Indo-Pacific and raises new questions about alliance expectations, industrial dependence and operational risk. Noh, the nominee for assistant secretary of defense for Indo-Pacific security affairs, wrote in his response to Senate questions that “while the ROK should focus primarily on leading the © Korea Risk Group. All rights reserved. No part of this content may be reproduced, distributed, or used for commercial purposes without prior written permission from Korea Risk Group. LATEST ANALYSIS 01Lee Jae Myung’s ‘pacemaker’ strategy tests South Korea’s leverage with Trump 02Trump’s Korea investment victory lap masks safeguards Seoul still controls 03North Korean POW dispute tests Seoul-Kyiv trust and future Ukraine policy 04South Korea’s CPTPP push exposes the cost of turning trade gains into consensus 05AI storage boom gives South Korea battery makers an EV overcapacity lifeline 06South Korea’s Mexico strategy runs into the hard limits of USMCA politics 07Preschool test ban forces South Korea’s English hagwons to rethink placement 08Lee Jae Myung’s Wall Street pitch tests South Korea’s capital market credibility

Analysis

US deterrence doctrine increasingly puts South Korea in China’s crosshairs

Pentagon official’s testimony ties ROK arsenal to broader regional deterrence, not just efforts to counter North Korea

Jeongmin KimOctober 10, 2025

US deterrence doctrine increasingly puts South Korea in China’s crosshairs

U.S., South Korean and Japanese fighters escort a U.S. B-52H bomber during trilateral drills, Oct. 22, 2023. | Image: U.S. Air Force photo by Senior Airman Karrla Parra

Washington has signaled that it no longer views South Korea’s expanding military capabilities as serving only to deter North Korea but also to reinforce U.S. efforts to contain China.

This shift, articulated by U.S. deputy assistant secretary of defense for East Asia John Noh ahead of his Senate confirmation hearing this week, redefines Seoul’s strategic role in the Indo-Pacific and raises new questions about alliance expectations, industrial dependence and operational risk.

Noh, the nominee for assistant secretary of defense for Indo-Pacific security affairs, wrote in his response to Senate questions that “while the ROK should focus primarily on leading the

US deterrence doctrine increasingly puts South Korea in China’s crosshairs

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Jeongmin Kim