Trump will destroy world trade, but democracies can defend themselves – and each other

The postwar global economic order, with the United States at its centre, has created more prosperity than any other period in human history. Yet as Donald Trump takes a sledgehammer to that economic order, America's democratic allies face a choice. We can accept the new cost of doing business with the US. We can follow the US down a path of mutually assured economic destruction with an ever-escalating trade war. Or we can find new avenues to keep free trade alive. My proposition? I believe we need a new platform for economic cooperation between the world's seven leading democracies. Call…