Japan’s international trade growth streak reached a 21st month in August with a 7% rise in exports and 16% in imports vs. a year earlier. That may reduce concerns about the impacts of the widening U.S.-China trade war on regional trade though further regulatory risks and increased tariffs lie ahead for Japanese exporters. Shipments to America improved by 5% and those to China increased 12%. Japan’s export growth was broad-based with a 24% rise in semiconductor equipment exports showing investment growth at its trade partners remains robust. American tariffs are having a minimal effect so...