WASHINGTON, March 6 (Reuters) - Ukraine has broadened a request for controversial cluster bombs from the United States to include a weapon that it wants to cannibalize to drop the anti-armor bomblets it contains on Russian forces from drones, according to two U. "FIGHTING THE "HUMAN WAVE"Ukraine wants the artillery rounds - the Dual-Purpose Conventional Improved Munitions (DPICM) - to halt the kinds of "human wave" attacks that Russia has mounted in its months-long drive to overrun the ruined eastern city of Bakhmut, the lawmakers said. Crow said he opposed providing the DCIPMs to Ukraine because of the high failure rate of the bomblets, which would worsen Ukraine’s already massive unexploded ordnance problem