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Jihoon Yu

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Latest from Jihoon Yu

North Korea

September 2, 2026

Tactical Nuclear Options and the Future of U.S.-ROK Extended Deterrence

The U. S.

Jihoon Yu • RealClearDefense

Military Strategy

August 12, 2026

Responsible Military AI in the Indo-Pacific Requires More Than Ethical Principles

Artificial intelligence may allow Indo-Pacific militaries to decide faster, but speed without reliability could make the region’s next crisis harder...

Jihoon Yu • RealClearDefense
North Korea Koreas Tensions

North Korea

August 3, 2026

North Korea's Naval Buildup Will Stretch Allied Forces Across the Indo-Pacific

North Korea’s naval modernisation is still in its early stages. Much of its surface and submarine fleet remains outdated, while its more ambitious...

Jihoon Yu • The Strategist (ASPI)

U.S. Navy

July 9, 2026

South Korea's Nuclear-Powered Submarine Ambition

South Korea’s nuclear-powered submarine ambition has entered Washington’s strategic agenda. The inclusion of related language in the appendix report...

Jihoon Yu • RealClearDefense

U.S. Navy

June 4, 2026

South Korea's Jangbogo N Project Is More Than a Nuclear-Powered Submarine

South Korea’s basic plan for a nuclear-powered submarine marks one of Seoul’s most consequential defense decisions. The government has formally named...

Jihoon Yu • RealClearDefense

Maritime Strategy

May 7, 2026

The Strategic Importance of Critical Maritime Infrastructure

The Strategic Importance of Critical Maritime Infrastructure (CMI) for the United States, South Korea, and Japan Critical maritime infrastructure has...

Jihoon Yu • RealClearDefense
File:Strait of Hormuz (MODIS 2020-12-04).jpg

Iran

April 3, 2026

Iran's War Is Testing the ROK-U.S. Alliance

The current Iran crisis is not a distant Middle Eastern contingency for South Korea. It is a direct test of how the ROK-U.

Jihoon Yu • RealClearDefense

Indo-Pacific/Asia

February 25, 2026

Why the Arctic Matters for the ROK–U.S. Alliance

The Arctic is no longer a distant periphery. It is becoming a strategic connector linking North American homeland defense, NATO reinforcement, and...

Jihoon Yu • RealClearDefense

Grand Strategy

January 29, 2026

What the 2026 U.S. National Defense Strategy Means for the ROK–U.S. Alliance

The newly announced 2026 U. S.

Jihoon Yu • RealClearDefense

Military Strategy

January 27, 2026

Competing Visions for a ROK SSN

With the Trump administration undertaking a wide range of foreign policy initiatives over the past several months, its announcement in November that...

Jihoon Yu • RealClearDefense

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