The world watches and waits while America chooses its next president. We are told every time that the outcome will affect us all. This time it really will. The decision taken by American voters will have implications for all of us for years to come. The post-war world order that has guaranteed our security and prosperity for decades could be at stake.
:: Clinton v Trump: Latest polling and battleground states
Donald Trump has shown little interest in the institutions painstakingly set up after World War Two and spoken blithely of ripping up trade agreements and undermining western alliances.