U.S. Prioritises Western Hemisphere as New National Security Strategy Marks Major Shift in Global Posture

December 6, 2025

The United States has released a sweeping new National Security Strategy (NSS) that dramatically reshapes the country’s foreign-policy priorities, placing the Western Hemisphere at the centre of U.S. national security for the first time in decades and recasting China primarily as an economic competitor rather than America’s foremost strategic threat, Prime Business Africa reports.

Published on Friday by the White House, the 2025 NSS outlines a decisive reorientation of U.S. defence, diplomatic and economic policy.

The document states that Washington will now “assert and enforce a Trump Corollary to the Monroe Doctrine”, signalling a renewed commitment to countering external influence and instability within the Americas, including Latin America and the Caribbean.

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Western Hemisphere Named ‘Number One Priority’

According to the strategy, the Western Hemisphere now constitutes the United States’ principal strategic theatre. It calls for a “readjustment” of global military deployments away from regions whose “relative importance has declined in recent decades” and toward addressing urgent threats close to home irregular migration, transnational criminal networks, and encroachment by extra-hemispheric powers.

This shift includes expanded Coast Guard and naval activity, intensified border-security coordination, and deeper defence partnerships with regional governments.

Ideology Stepped Down as Guiding Principle

In a notable break from previous U.S. strategic doctrines, the new NSS deliberately tones down ideological framing. It asserts that U.S. foreign policy is “not grounded in traditional political ideology” and stresses the desire for “good relations with nations whose governing systems differ from ours.”

The document avoids democracy-promotion rhetoric and does not invoke the “rules-based international order” a staple of earlier strategies underscoring what analysts describe as a more interest-driven, transactional foreign-policy posture.

China Downgraded From Primary Threat

One of the most consequential shifts concerns China. The strategy no longer labels China as a “pacing challenge” or America’s most consequential adversary. Instead, it describes Beijing chiefly as:

  • An economic rival,
  • A source of supply-chain vulnerabilities, and
  • A regional power whose dominance Washington would “ideally” seek to curb.

On Taiwan, the document maintains that the U.S. opposes unilateral changes to the status quo, but characterises deterring conflict over the island merely as “a priority” not a vital national interest. It further warns that if U.S. allies in the First Island Chain do not dramatically increase defence spending and readiness, the military balance could become “so unfavorable as to make defending that island impossible.”

The strategy also acknowledges for the first time that China may achieve military overmatch in a conflict scenario.

Economic Competition at the Core

The NSS places economics at the heart of U.S. – China rivalry, stating that the contest is about “winning the economic future.” It openly concedes that the tariff-based pressure campaign begun in 2017 failed to curb China’s dominance in key supply chains, noting that “China adapted.”

To counter this, Washington intends to build an international economic coalition capable of exerting stronger leverage over Beijing than the U.S. can achieve alone. However, experts cited by Prime Business Africa observe that this approach may clash with ongoing U.S. trade disputes with its own allies.

Europe and Middle East Deprioritised

The strategy signals reduced U.S. emphasis on Europe and the Middle East, portraying European governments as inconsistent partners and encouraging them to invest more robustly in defence and border security.

The document offers no expanded U.S. commitments in those regions, underscoring a broader recalibration away from long-standing theatres of engagement.

A Defining Pivot in U.S. Grand Strategy

Overall, the 2025 NSS represents one of the most significant realignments of American strategic policy in recent memory. It shifts U.S. focus from global intervention to regional primacy in the Western Hemisphere, recasts China as primarily an economic competitor, and formally abandons the ideological mission that shaped U.S. foreign policy for decades.

Analysts tell Prime Business Africa that the new strategy signals the beginning of a more constrained, interest-centred conception of American power one anchored in securing the homeland, reinforcing hemispheric dominance, and navigating great-power rivalry through economic rather than ideological means.

 

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Amanze Chinonye is a Staff Correspondent at Prime Business Africa, a rising star in the literary world, weaving captivating stories that transport readers to the vibrant landscapes of Nigeria and the rest of Africa. With a unique voice that blends with the newspaper's tradition and style, Chinonye's writing is a masterful exploration of the human condition, delving into themes of identity, culture, and social justice. Through her words, Chinonye paints vivid portraits of everyday African life, from the bustling markets of Nigeria's Lagos to the quiet villages of South Africa's countryside . With a keen eye for detail and a deep understanding of the complexities of Nigerian society, Chinonye's writing is both a testament to the country's rich cultural heritage and a powerful call to action for a brighter future. As a writer, Chinonye is a true storyteller, using her dexterity to educate, inspire, and uplift readers around the world.

Amanze Chinonye

Amanze Chinonye is a Staff Correspondent at Prime Business Africa, a rising star in the literary world, weaving captivating stories that transport readers to the vibrant landscapes of Nigeria and the rest of Africa. With a unique voice that blends with the newspaper's tradition and style, Chinonye's writing is a masterful exploration of the human condition, delving into themes of identity, culture, and social justice. Through her words, Chinonye paints vivid portraits of everyday African life, from the bustling markets of Nigeria's Lagos to the quiet villages of South Africa's countryside . With a keen eye for detail and a deep understanding of the complexities of Nigerian society, Chinonye's writing is both a testament to the country's rich cultural heritage and a powerful call to action for a brighter future. As a writer, Chinonye is a true storyteller, using her dexterity to educate, inspire, and uplift readers around the world.

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