负责政策的国防部副部长 meaning in Chinese

under secretary of defence for policy

Principal deputy under secretary of defense for policy ryan henry said on 23 april that the visits were intended to clear up ' misunderstandings ' about the scope and mission of the new command and better explain us strategy in the region
负责政策的国防部副部长首席帮办瑞安亨利4月23日说，此行旨在澄清人们对于这个新建司令部的职责范围和任务存在的误解，并更好地解释美国在这个地区的战略。