KYIV, Ukraine — While interceptor drones have become one of the most sought-after commodities of the Iran war, Ukrainian officials and defense practitioners are cautioning allies to recognize that the pace of today’s battlefield requires them to buy into an entirely new system of production alongside the endpoint weapon. “Expertise is not a drone, but a skill, a strategy, a system where a drone is one part of the defense,” Ukrainian President Volodymyr Zelenskyy told Reuters on Monday. Ukraine