Is there a Trump doctrine?

If it’s not threats of military action against Colombia and Cuba, or talk of taking Greenland from Denmark, it’s seizing oil tankers in European and Caribbean waters. All of it has world leaders scrambling to figure out how to handle Donald Trump’s revived form of US imperialism. Jonathan Freedland speaks to the Pulitzer-winning author Anne Applebaum about what to expect from a world changing by the hour at the hands of the US president