Panalpina has expanded its Mexican airfreight network, while Deutsche Post DHL has invested in a Colombian freight forwarder as international trade volumes continue to grow. Wrangling over U.S. metals duties continues, with Russia and Turkey threatening retaliatory tariffs. Also: the EU is unlikely to accept America’s latest metals quota offer; the Suez Canal faces competition from four directions; Caterpillar is struggling to meet demand, even with a global supply chain; ABB increases its presence in China; more rail investment is needed in the U.S. to support international trade; Pa...