US National Defense Strategy 2026: South Korea to Take 'Primary' Lead in Deterrence
The 2026 US National Defense Strategy (NDS) designates South Korea as the 'primary' lead for North Korean deterrence, marking a shift toward limited U.S. support.
The handshake remains, but the burden is shifting. The Pentagon's new National Defense Strategy (NDS) released on Jan 23, 2026, signals a major pivot in the Seoul-Washington alliance, declaring South Korea capable of taking 'primary' responsibility for deterring North Korea.
Focusing on US National Defense Strategy 2026 South Korea Pivot
According to the document, the U.S. assessment of South Korea's military prowess is at an all-time high. With a massive defense budget, a robust industry, and mandatory conscription, Seoul is seen as ready to lead. However, this praise comes with a caveat: U.S. support will now be 'critical, but more limited.' The Pentagon isn't just praising an ally; it's asking for a strategic rebalance.
The NDS emphasizes that this shift aligns with American interests in updating force posture. While North Korea remains a 'direct military threat' to the Asian ally, its nuclear forces now present a 'clear and present' danger to the U.S. homeland, forcing Washington to rethink its global commitments.
Global Implications for Allied Responsibility
This isn't an isolated case for the Korean Peninsula. Defense Secretary Pete Hegseth and the Pentagon have made it clear: they'll prioritize incentives for allies in Europe and the Middle East to take the lead in their own defense. For Seoul, this means the 'monster' Hyunmoo-5 missile and other domestic capabilities will become even more central to the regional security architecture.
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