American High Mobility Artillery Rocket Systems being used in Ukraine are making an impact on the conflict there between Ukrainians fighting to preserve their national sovereignty and Russian forces who have illegally invaded that country. The M142 HIMARS system allows for the launching of multiple, precision-guided rockets. Already, the U.S. had provided eight of the systems to Ukraine and last week promised to send an additional four, for a total of 12 of the systems. During a background briefing today at the Pentagon, a senior military official said the Defense Department believes the HIMARS are having an indirect, but significant...