President Donald J. Trump’s tweet this weekend that the U.S. might terminate all trade with countries doing business with North Korea was widely derided on the grounds of realism. Given that 90 percent of North Korea’s trade is with China, the tweet was little more than a veiled threat to terminate all U.S. trade with Beijing, ending a bilateral trade relationship valued at $650 billion a year. It would, as many correctly pointed out, mean economic disaster for North Korea – and also for the U.S.
O'Sullivan, Meghan. "Trump Can't Solve North Korea by Just Making a Deal." Bloomberg View, September 5, 2017.