The French President's World Economic Forum address came after Trump published private texts from Macron pleading with him over his plans for Greenland.
Asked if he could offer any advice to New York mayor Zohran Mamdani, who assumed office at the beginning of this year, Sir Sadiq said: 'Don't let bullies win.'
In an interview with Fox Business, Trump said 'there are two ways Iran can be handled: militarily, or you make a deal' to prevent Tehran from acquiring nuclear weapons.