President Trump’s decision to apply sanctions to Iran could have an impact on American farmers, Italian exporters and shipping firms. Expeditors’ and DP-DHL’s earnings show the value of pricing discipline. U.S. ports faced slowing growth in April. Also: Panama Canal bookings slip; a drop in the Philippines’ trade is a sign of what a China-U.S. trade war could do; North Korea hopes for sanctions relief as its trade with China recovers; U.S. wind power equipment imports surge, and may draw regulatory attention; China restricts pork imports from the U.S.; America rejects Mexico’s NAFTA sugg...