Donald Trump's election as President of the United States came as a surprise for many. His positions on international trade, climate change, the future of the EU, NATO, and relations with Russia have sent shockwaves throughout the western world. Although these ideas never constituted a coherent philosophy, if transformed into policy directions, they would threaten the very foundations of the Liberal World Order as commonly understood today. Even if Trump does not act on the most radical pledges made during his election campaign, by positioning himself as the antithesis of the Obama administration he would still bring notable change to US foreign policy. The extent of that chage is now open to question as leaders and publics around the world are bracing themselves for what comes next.