U.S. Joint Forces Command chief Gen. James Mattis wants to quell the Mexican government's concerns about references to the country's instability in a 2008 JFCOM document outlining potential threats and opportunities for the future joint force. Reports that Mexico was concerned about the comments in last October's Joint Operating Environment document began to surface last month. "The Mexican ambassador has asked to see me and we hope to link up very soon," Mattis, NATO's supreme allied commander of transformation, said...