Donald Trump did not rule out using military force to take control of the Panama Canal and Greenland and announced a bold plan to change the name of the Gulf of Mexico to the 'Gulf of America'.

The president-elect, 78, announced his threat of coercion on the global stage and the name swap during a wild and wide-ranging press conference at Mar-a-Lago on Tuesday morning.

He laid out his vision for the world, took aim at Canada and tore into President Joe Biden's climate agenda.

Trump also attacked his nemesis, Special Counsel Jack Smith, by calling him a 'nutjob' and demanding all his criminal cases be brought to an end.

'He will execute everybody',' he raged before taking questions from the press. 

Just 13 days before the inauguration, he said the United States was entering the 'golden age' and will 'take off like a rocketship' when he gets the keys back to 1600 Pennsylvania Avenue.

He also slammed the crackdown on gas heaters by saying electric heaters 'itch' and said windmills are killing whales.

In a remarkable moment, a reporter asked Trump if could assure he would not use 'military or economic coercion' to take control of the Panama Canal and Greenland.

'I´m not going to commit to that,' Trump said, when asked if he would rule out the use of the military. 'It might be that you´ll have to do something. The Panama Canal is vital to our country.' He added, 'We need Greenland for national security purposes.' 

He has been ramping up threats to take over both in recent weeks as he prepares for his second term.

Trump repeated his complaints that the canal is 'being operated by China. And we gave the Panama canal to Panama. 

'We didn't give it to China and they've abused it. They've abused that gift. It should never have been made, by the way!'

The Panama Canal has been solely controlled by the eponymous country for more than 25 years. The U.S. returned the Panama Canal Zone to the country in 1979 and ended its joint partnership in controlling the strategic waterway in 1999.