The leaders have spoken twice on the phone but have recently been at odds over major issues including the Falkland Islands and Northern Ireland The two leaders are expected to come face to face at the UN general assembly next week in New York. Key points and original sources are listed below.

• The leaders have spoken twice on the phone but have recently been at odds over major issues including the Falkland Islands and Northern IrelandS1

• The two leaders are expected to come face to face at the UN general assembly next week in New York.S2

• Labour chair Bridget Phillipson instead described the new Prime Minister Andy Burnham's previous criticism of the erratic US President on social media as 'politics'S3