Trump's arrival in the Swiss Alps community of Davos was delayed after a minor electrical issue aboard Air Force One had forced a return to Washington to switch aircraft, but it wasn't expected to push back his scheduled keynote speech.

Europe is not headed in the right direction, President Donald Trump said at the World Economic Forum in Davos today, as relationship turned hostile between a superpower and once-close allies.

This year's Davos, he agreed, is one of the most tense in memory. Yet amid the discord, Gates pointed to innovation, especially in AI, as a transformative force.