It was a good few days to be an authoritarian leader.

At the Group of 20 gathering in Japan, leaders who can find themselves shunned at such multilateral summits were the focus of U.S. President Donald Trump's attention, humor and respect across Friday and Saturday.

Turkish leader Recep Tayyip Erdogan was a "tough cookie" and Saudi Arabian Crown Prince Mohammed bin Salman a "friend" who has done a "spectacular job." Trump said he had a "tremendous discussion" with Russian President Vladimir Putin. And Chinese President Xi Jinping is "one of the great leaders in 200 years."