U.S. President Donald Trump’s second term is increasingly defined by his assertive foreign policy. Following a dramatic night raid in Caracas that captured Venezuela’s president and his wife, Trump invoked the 1823 Monroe Doctrine, rebranding it as the 'Donro Doctrine' to reaffirm U.S. dominance in the Western Hemisphere. In the days since, Washington has issued warnings or threats toward five other countries or territories.

Trump expressed interest in acquiring Greenland, citing national security and competition with Russia and China, though Denmark and Greenland firmly rejected the idea. He also warned Colombia’s leftist president Gustavo Petro over alleged drug cartel ties, hinted at possible U.S. action, and criticized Mexico for failing to curb narcotics and illegal migration. Regarding Iran, Trump threatened severe retaliation if protesters were killed amid ongoing unrest, while in Cuba he suggested no intervention was needed, claiming the island was collapsing economically after losing Venezuelan oil support.

The developments underscore Trump’s renewed emphasis on U.S. assertiveness abroad, raising tensions with allies and adversaries alike as his administration signals a more interventionist posture.