Xi Jinping shows how he will return American fire

Bullies are often told to pick on someone their own size. Donald Trump has just followed that advice. After America’s president threatened to start a damaging new trade war with China, Canada and Mexico, America’s two smaller neighbours looked for ways to placate him. Accused of doing too little to stem the flow of illicit drugs and migrants, they both won a month’s reprieve by promising to send more agents and troops to their borders with America.