The Economist “Intelligence Unit” issues a top ten list of global risks each month. The high probability and high impact ones include severe recession and debt crises in Asia, military tension between the U.S. and Russia, and a breakup of the E.U. Donald Trump makes the list as high impact but only moderate probability:

In the event of a Trump victory, his hostile attitude to free trade, and alienation of Mexico and China in particular, could escalate rapidly into a trade war – and at the least scupper the Trans-Pacific Partnership between the US and 11 other American and Asian states signed in February 2016. His militaristic tendencies towards the Middle East (and ban on all Muslim travel to the US) would be a potent recruitment tool for jihadi groups, increasing their threat both within the region and beyond.

Terrorism, U.S.-China confrontation, and a sudden oil price shock make the list lower down as potentially severe but less likely.