The Weekly Rundown: A Trade War Escalation, Hong Kong Protests and a Perilous Point for the U.S. on Iran

U.S. Treasury Secretary Steven Mnuchin (left) and U.S. Trade Representative Robert Lighthizer flank Chinese Vice Premier Liu He as they pose for photographs before holding trade talks in Shanghai on July 31. The next day President Donald Trump said he will impose 10 percent tariffs on Sept. 1 on the remaining $300 billion of Chinese imports he hasn't already taxed. Trade talks are scheduled to resume in September in Washington.