Yes. In 2018 President Trump will deliver on some of his protectionist campaign rhetoric by taking punitive actions against China. The most likely triggers for action will be official reports that the Trump administration has commissioned into China’s alleged theft of intellectual property, and its subsidised production of steel and aluminium. The president, spurred on by his trade team, is likely to order retaliatory measures, including tariffs. Whether that marks the first shot in a trade war will depend on how China reacts. A Chinese decision to impose retaliatory tariffs, or to take America to the World Trade Organization, will signal the opening of hostilities.