Britain is preparing to leave European Union in March 2019. The complex negotiations have moved slowly and May's Cabinet seems divided over how best to separate Britain from the 28-nation bloc, AP reported.

In an ITV interview to be broadcast Sunday night, Trump says "would it be the way I negotiate? No, I wouldn't negotiate it the way it's (being) negotiated... I would have had a different attitude." He did not elaborate.

There have been tensions between the two leaders. In the same interview, Trump apologizes for retweeting videos by a far-right group in Britain and wishes Prince Harry and Meghan Markle well with their May wedding.