Xi-Trump summits must leave businesses with greater clarity, not less

An aircraft supplier can have parts ready and a customer waiting yet be unable to ship while Washington holds up its licence. In Shanghai, Citi has approval to establish a securities business after years of waiting. Companies must invest, sign contracts and move production while the two governments negotiate. A board needs to know what can proceed now, what remains conditional and what could stop the business after the money has been spent. Chinese President Xi Jinping and US President Donald...