"In the course of a week, the New York Stock Exchange said it would delist a trio of Chinese companies, then that it wouldn’t and then that it would, stoking confusion among investors globally. The moves were the result of an initiative by then-President Donald Trump to punish companies with close ties to the Chinese military as part of a crescendo in U.S.-China tensions. The dizzying sequence reflects ambiguity over both how Trump’s push would work and what its impact would be. As global index p"