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President Donald Trump has arrived in Davos, Switzerland for the World Economic Forum as the start of the Senate impeachment trial in Washington has been mired by familiar scenes of hyperpartisanship. 

The president used a speech at the forum to attack climate activists as "perennial prophets of doom," and celebrated the United States' status as the world's largest producer of oil and natural gas. His comments cut against the meeting's theme of a "cohesive and sustainable world" and notably steered well clear of the impeachment drama unfolding on Capitol Hill.

On Monday, Senate Majority Leader Mitch McConnell released the rules of the trial which indicated that Republicans are aiming for as short a trial as possible. The rules allow the House impeachment managers and President Trump's legal counsel three days each to make their opening arguments and defer a vote on hearing testimony from witnesses. Without witnesses, lead impeachment manager Adam Schiff said "the opening statements will be the end of the trial".