The specter of a second Donald Trump presidency is looming over the World Economic Forum in Davos. World leaders gathered for the annual forum this week in the Swiss Alps, where power brokers expressed concerns that Trump appears destined to win the Republican presidential nomination and potentially be re-elected to a second term, reported Politico. “If we are to draw lessons from history, looking at the way he ran the first four years of his mandate, it’s clearly a threat,” said Christine Lagarde, president of the European Central Bank. “Just look at the trade tariffs, the commitment to NATO,…