Vietnamese companies must increase purchases of U.S. manufactured goods as the two countries seek to “balance” their trade relationship, the country’s trade minister said on Wednesday, the same day the sides began a first round of trade talks. Vietnamese Trade Minister Nguyễn Hồng Diên convened a meeting with representatives from the country’s telecommunication, energy and airline industries to discuss “balancing” U.S.-Vietnam trade, the country’s government said in a May 7 statement , according to an informal translation. Diên urged the...