US Republican Senator, Florida - Rick Scott

It's impossible to predict Donald Trump's policy-making and diplomacy. He seeks neither consistency, nor consensus - as is obvious in his approach to China, North Korea, Iran and other challenges at home and abroad. Stephen Sackur speaks to Republican Senator Rick Scott of Florida - a key Trump ally back in 2016, who has since parted company with the President on some of his most controversial policies. How effective and how sustainable is the Trump presidency?(Photo: US Senator Rick Scott speaks during Concordia Americas Summit, in Bogota, Colombia, 2019. Luisa Gonzalez/Reuters)