unpredictability

"Mr Trump's unpredictability, his impulsiveness and recklessness will inevitably lead to significant shocks in the bilateral relationship," says Wu Xinbo, professor and director at the Centre for American Studies at Fudan University.

Trudeau, speaking to reporters on Tuesday morning, said there was "always going to be a certain amount of unpredictability and rhetoric coming out from this administration".

The real conundrum for Europe now is his unpredictability: How much is bluster and intimidation and how much is a promise of action?

While grappling with the unpredictability – Trump's wild half-threats of making Canada the 51st State or grabbing Greenland – sources inside government also spot opportunities.

The joy of our version is its chaotic unpredictability; I never would have guessed the second season’s winners in that round’s first three episodes.