> The state of the trade talks were cast into doubt after Trump’s surprise announcement over Twitter on Sunday that he planned to raise tariffs on $200 billion

> The state of the trade talks were cast into doubt after Trump’s surprise announcement over Twitter on Sunday that he planned to raise tariffs on $200 billion of Chinese goods to 25 percent from 10 percent because talks were moving too slowly. It's hard to know what to worry about more: the fact that the President acts unilaterally on trade; the fact that the countries with the two largest GDPs are entering an unprecedented phase of trade war; or the president of United States conducting foreign policy via Twitter.