US President Donald Trump has urged Cuba to “make a deal before it’s too late”, as he ramps up pressure on the island nation.

Trump said in a barrage of social media posts late on Sunday (US time) that no more Venezuelan oil or money would go to the Communist-run island.

Venezuela is Cuba’s biggest oil supplier but shipping data shows no ships have departed for the Caribbean country since the capture of Venezuelan president Nicolas Maduro by US forces in early January amid a strict US oil blockade on the OPEC country.

Meanwhile, Venezuela and the US are progressing on a $US2 billion ($A3 billion) deal to supply up to 50 million barrels of Venezuelan oil to the US. The proceeds will be deposited in US Treasury-supervised accounts, a major test of the emerging relationship between Trump and interim President Delcy Rodriguez.

“THERE WILL ‌BE NO MORE OIL ​OR MONEY GOING TO CUBA – ZERO! I strongly suggest they make a deal, BEFORE IT IS TOO LATE,” Trump wrote on ‍his Truth Social platform on Sunday.

“Cuba lived, for many years, on large amounts of OIL and MONEY from Venezuela.”

Trump did not elaborate on his suggested deal.

US officials have hardened their rhetoric against Cuba in recent weeks.

Cuban Foreign Minister Bruno Rodriguez said in a post on X on Sunday that the nation had the right to import fuel from any suppliers willing to export it.

He also denied Cuba had received financial or other “material” compensation in return for ​security services provided to any country.

Thirty-two members of Cuba’s armed forces and intelligence services ‌were killed during the US raid on Venezuela. Cuba said those killed were responsible for “security and defence” but gave no details on the arrangement between the two long-time allies.

Cuba relies on imported ​crude and fuel, mainly provided by Venezuela, and Mexico in smaller volumes, purchased on the open market to keep its power generators and vehicles ‍running.

Among the flurry of Trump posts was one of him smoking a Cuban cigar. Image: Truth Social

As its operational refining capacity dwindled in recent years, Venezuela’s supply of crude and fuel to Cuba has fallen.

But the South American country is still the largest provider with 26,500 barrels a day exported last year, according to ship tracking data and internal documents of state-run ​PDVSA, which ​covered roughly 50 per cent of Cuba’s oil deficit.

Mexico has emerged in ​recent weeks as a critical alternative oil supplier to the island. Its supply remains small, according to shipping data.

Mexican President Claudia Sheinbaum last week said her country had not increased supply volumes but given recent political events in Venezuela, Mexico had turned into an “important supplier” of crude to Cuba.

US intelligence has painted a grim picture of Cuba’s economic and political situation. But Reuters reported on Saturday that its assessments offer no clear support for Trump’s prediction that the island was “ready to fall”.

The CIA’s view is that key sectors of the Cuban economy, such as agriculture and tourism, are severely strained by frequent blackouts, trade sanctions and other problems.

The potential loss of oil imports and other support ‍from Venezuela, for decades a key ally, could make governing more difficult for President Miguel Diaz Canel.

Four in 10 Danes think Trump will invade Greenland

Almost four out of 10 Danes believe the US will invade the Danish autonomous territory of Greenland during Donald Trump’s presidency, according to a poll.

Of the 1005 people surveyed between January 6-9, 38 per cent said they believed the US will take control of the Arctic island by force.

On the other hand, 28.6 per cent of the people said they did not agree with the hypothesis that Trump would attack Greenland.

The survey was conducted by market research firm Voxmeter for Denmark’s Ritzau news agency.

Trump says he will not allow Russia or China, who are active in the region, to occupy Greenland, and has decided to take over the Danish autonomous territory for reasons of national security.

He also questioned Denmark’s sovereignty over the territory, stating that, although he admires the Nordic country, “the fact that they landed there with a ship 500 years ago doesn’t mean that they own the land”.

However, Greenland has no interest in becoming part of the US.

The five parties of the Greenland parliament, Inatsisartut, have issued a joint statement saying Greenland’s future must be decided by the people who live there.

-with AAP