US President Donald Trump's foreign policy approach has been characterized by recent actions, including the apprehension of Venezuela's president and his wife in Caracas. Following this operation, President Trump referenced the 1823 Monroe Doctrine, re-branding it the "Donroe Doctrine," which historically asserted US influence in the Western Hemisphere. Subsequent statements have indicated potential US focus on other nations.
Greenland
The United States maintains a military presence at Pituffik Space Base in Greenland. President Trump has expressed interest in acquiring the entire island, citing national security concerns and the presence of Russian and Chinese vessels in the region. Greenland, an autonomous territory within the Kingdom of Denmark, is located approximately 2,000 miles (3,200 km) northeast of the US. It possesses significant reserves of rare earth minerals, vital for modern technologies and military hardware. The island also holds a strategic position in the North Atlantic, with potential new Arctic shipping routes emerging due to melting polar ice. Greenland's Prime Minister, Jens Frederik Nielsen, rejected the concept of US control, stating, "No more pressure. No more insinuations. No more fantasies of annexation. We are open to dialogue. We are open to discussions. But this must happen through the proper channels and with respect for international law."
Colombia
Subsequent to the Venezuela operation, President Trump issued a warning to Colombian President Gustavo Petro to "watch his ass." Colombia, bordering Venezuela to the west, has substantial oil reserves and is a notable producer of gold, silver, emeralds, platinum, and coal. The country is also identified as a significant hub for the regional drug trade, particularly cocaine. A dispute has developed between the US and Colombia following US interdictions of vessels in the Caribbean and eastern Pacific, which the US asserted were carrying drugs. In October, the US imposed sanctions on President Petro, alleging his administration was allowing cartels to "flourish." President Trump stated on Air Force One that Colombia was being "run by a sick man who likes making cocaine and selling it to the United States," adding, "He's not going to be doing it for very long." When questioned about a potential US operation targeting Colombia, Trump responded, "It sounds good to me." Historically, Colombia has cooperated with the US in anti-drug efforts, receiving significant military assistance.
Iran
Iran is currently experiencing anti-government protests. President Trump cautioned that Iranian authorities would be "hit very hard" if additional protesters were to die, stating, "We're watching it very closely. If they start killing people like they have in the past, I think they're going to get hit very hard by the United States." While Iran is geographically outside the stated scope of the "Donroe Doctrine," President Trump has previously indicated potential further action against the Iranian government. This follows US strikes on Iranian nuclear facilities last year, which occurred after an Israeli operation to counter Iran's nuclear weapon development capabilities, culminating in a 12-day Israel-Iran conflict. Reports from a recent meeting between President Trump and Israeli Prime Minister Benjamin Netanyahu at Mar-a-Lago suggested Iran was a primary topic of discussion, with US media reporting that Netanyahu mentioned potential new strikes against Iran in 2026.
Mexico
President Trump's 2016 presidential campaign prominently featured his call to "Build the Wall" along the US-Mexico border. Upon resuming office in 2025, he signed an executive order renaming the Gulf of Mexico the "Gulf of America." He has repeatedly asserted that Mexican authorities are not sufficiently addressing the flow of drugs and undocumented immigrants into the United States. On Sunday, President Trump remarked that drugs were "pouring" through Mexico, indicating a need to "do something," and described Mexican cartels as "very strong." Mexican President Claudia Sheinbaum has publicly rejected any US military action on Mexican territory.