President Trump will virtually join the Davos Forum at 11 a.m., slated to give a speech and join World Economic Forum chief Børge Brende for a question-and-answer session. Trump attended the summit of global business leaders in Switzerland twice during his first term.

The organisers of the annual snowbound gathering in Davos say this year's event comes at a "highly consequential moment for the world", an understatement if ever there was one, writes Europe Editor Tony Connelly.