More than $1 billion worth of U.S. missiles, drones and other weapons and equipment sent to Ukraine have not been properly tracked by officials, according to a Pentagon report released Thursday. Of a total of $1.69 billion worth of items that require additional layers of tracking and monitoring thanks to their sensitive military technology, a little more than $1 billion — or nearly 60 percent — are not fully accounted for, the report found. The Defense Department’s inspector general did not say if any such weapons had been misused or diverted after being shipped to Ukraine because “it was beyond...