London Mayor Sadiq Khan has been lambasted for his "foolish rhetoric" against Donald Trump by his son Eric, as he sat down with GB News for an exclusive interview.
Following the victory of the former President in the US election earlier this month, his son revealed that the Mayor had "not contacted him" to congratulate him on his win.
Khan and Trump have previously feuded during the President-elect's first term in the White House, accusing the then-President of being "sexist, homophobic, Islamophobic, and racist".
Khan also cited his "ethnicity and religion" as reasons why Trump set out to criticise him.
Eric Trump hit out at London Mayor Sadiq Khan for his 'rhetoric' against father Donald Trump
GB News / PA
Speaking to GB News presenter Ben Leo, Trump delivered his verdict on Khan, declaring that he "doesn't give a damn about the Mayor of London".
Discussing Labour's current relationship with his father, Trump explained: "Do I think it's tone deaf that there are certain leaders of certain countries who, two days before a US election, come out and call it incorrectly for the opposite party?
"In the biggest blowout election in arguably American history, do I think that helps foreign relations? No."
Highlighting the importance of a Trump presidency on UK-US relations despite Labour's stance, Trump added: "I think Donald Trump could be the greatest president in the history of the United States to the United Kingdom - you might want to pick up the phone and just say congratulations.
When asked by Ben if Prime Minister Sir Keir Starmer did reach out to the Republican winner following his victory, Trump confirmed: "They had a nice conversation".
However, when asked if Sadiq Khan contacted the President-elect, Trump stated: "I don't know if they've spoken, but I do see the rhetoric.
"It doesn't keep me up at night, but oftentimes I reflect on the fact that I think it's just foolish, when you have somebody who would otherwise be the greatest advocate, for maybe the two greatest allies that the world could ever have.
"The United States and the UK, we have been bound at the hip for so long, we have the same interests globally, and it's sometimes infuriating when you have leaders that maybe want to get a couple additional clicks on Twitter or Facebook - I don't even think it does that for them, to tell you the truth."
Eric Trump sat down with host Ben Leo for an exclusive GB News interview
GB News
Hitting out and Khan and fellow Labour activists who volunteered in support for the Harris campaign, Trump fumed: "They say bombastic things and usually call it wrong, by the way, and I don't think that does help relations between two countries.
"It would have been a lot easier had they just stayed on the sideline, and let the people of an independent nation vote, and then embrace whoever the ultimate leader was that was chosen by the people, of that nation."
In a further attack on Khan, Trump concluded: "I can promise you, I don't go to bed at night thinking about what one of 200 world leaders thinks at any given moment.
"If I did, I would be a basket case. When you start compartmentalising things as a game, whether it be the media, whether it be certain foreign leaders who say foolish things that are counterproductive to their own societies and trade relations...
"When you start letting those things bother you, I'm telling you, it's just it's going to weigh you down. Focus on what you have to do as a leader."