US President Trump has unveiled a new national security strategy framework aimed at stopping non-Western Hemisphere competitors from threatening stability and political alignment in Latin America. The framework designates the Western Hemisphere as part of America’s “Homeland Security Zone” and introduces the “Trump Corollary” to restore US pre-eminence in the region. The White House stresses that neighboring countries’ stability is a matter of national defense.
The strategy was released on December 6, 2025, drawing from the 19th-century Monroe Doctrine, which warned European powers against interfering in the newly independent nations of the Americas. In US strategic parlance, the “Western Hemisphere” refers broadly to the Americas, a geopolitical space long regarded as under Washington’s sway.
The strategy declares that the United States will “deny non-Hemispheric competitors the ability to position forces or other threatening capabilities, or to own or control strategically vital assets, in our Hemisphere”, introducing what officials call the “Trump Corollary” to restore US pre-eminence across the region. The White House described the Western Hemisphere as part of America’s “Homeland Security Zone”, treating the stability and political alignment of neighbouring countries as matters of national defence rather than diplomatic preference.
Keywords include The White House, China, Chile, Peru, Panama, Mexico, Belt and Road Initiative, Argentina, Beijing, Latin America, and East Asia. The framework particularly targets China’s expansion in the region, such as a port project in Peru described as a “Gateway to Asia” for faster transport of goods to and from South America.
This move reflects US concerns over Beijing’s growing influence, emphasizing the preservation of political alignment in the Americas.