strategist       
noun [ C ]  military, business, politics uk/ˈstræt.ə.dʒɪst/ us/ˈstræt̬.ə.dʒɪst/
 (尤指军事、政治或生意上)善于谋划的人,战略家,军师
someone with a lot of skill and experience in planning, especially in military, political, or business matters
  He's the president's chief political strategist. 他是总统主要的政治战略顾问。