US President Donald Trump is expected to attend the World Economic Forum’s annual meeting in Davos next year, according to people familiar with his planning, signaling warming US-Swiss relations as the nations close in on a trade deal.Trump is planning to travel to Switzerland with a large entourage, according to people familiar with the plans who didn’t want to be named discussing them in public. Trump didn’t attend January’s edition of the meeting, held shortly after his inauguration, and instead spoke to ...