US President Donald Trump's second term is being shaped by his foreign policy ambitions. He's followed through on threats against Venezuela by capturing its president and his wife from their heavily fortified Caracas compound in a dramatic overnight raid.

When describing the operation, Trump dusted off the 1823 Monroe Doctrine and its promise of US supremacy in the western hemisphere - re-branding it the Donroe Doctrine.

Here are some of the warnings he's made against other nations in Washington's orbit in recent days.

Greenland

The US already has a military base on Greenland - Pituffik Space Base - but Trump wants the whole island.

We need Greenland from the standpoint of national security, he told journalists, saying the region was covered with Russian and Chinese ships all over the place.

The vast Arctic island, part of the Kingdom of Denmark, sits roughly 2,000 miles (3,200 km) to the north-east of the US.

Greenland is rich in rare earth minerals which are crucial for the production of smartphones, electric vehicles and military hardware. Currently, China's production of rare earths far outweighs that of the US.

Greenland also occupies a key strategic location in the North Atlantic, giving access to the increasingly important Arctic circle. As polar ices melt in the coming years, new shipping routes are expected to open up.

Greenland's Prime Minister Jens Frederik Nielsen responded to Trump by describing the notion of US control over the island as a fantasy.

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, he said.

Any US attempt to seize Greenland would bring it into conflict with another NATO member, likely putting the alliance in peril.

Colombia

Just hours after the operation in Venezuela, Trump warned Colombian President Gustavo Petro to watch his ass.

Colombia is home to substantial oil reserves and is a major producer of gold, silver, emeralds, platinum and coal, and is also a key hub for the region's drug trade.

The US imposed sanctions on Petro in October, saying he was allowing cartels to flourish.

Speaking aboard Air Force One, Trump said Colombia was being run by a sick man who likes making cocaine and selling it to the United States.

He's not going to be doing it for very long, he said. Asked whether the US would carry out an operation targeting Colombia, Trump replied, It sounds good to me.

Iran

Trump warned overnight that Iranian authorities would be hit very hard if more protesters died.

While Iran theoretically falls outside the realm of the Donroe Doctrine, Trump has previously threatened actions against the regime.

Mexico

Trump's rise to power in 2016 was defined by calls to Build the Wall along the southern border. On his first day back in office in 2025, he signed an executive order to rename the Gulf of Mexico the Gulf of America.

He has frequently claimed Mexican authorities aren't doing enough to stop the flow of drugs or illegal immigrants. Trump's suggestion of sending US troops to Mexico was publicly rejected.

Cuba

The island nation, just 90 miles south of Florida, has been under US sanctions since the early 1960s. Trump suggested that military intervention might not be needed, as Cuba is ready to fall.

Trump noted, They got all their income from Venezuela, from Venezuelan oil.

US Secretary of State Marco Rubio remarked that Cuban officials should indeed be concerned about the current situation.