A.M. Edition for April 8. Beijing pledges more countermeasures if President Trump follows through on a threat for an additional 50% tariff on Chinese goods. Despite signs of an intensifying trade war, the WSJ’s Alex Frangos explains why global equities are regaining ground today. Plus, the U.S. and Iran plan high-stakes nuclear talks. And correspondent Kejal Vyas takes us to the U.S.-Mexico border as the normally-bustling frontier braces for new trade barriers. Luke Vargas hosts. 

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