; and (B) an identification of key existing or needed military, economic, informational, or intelligence tools or sources of leverage outside the Department of State that are critical to the successful implementation of the NDDS. (4) A plan to utilize available diplomatic and development tools or sources of leverage to address or minimize the leading threats and challenges and to take advantage of the leading opportunities, including— (A) a discussion of the optimal allocation of finite resources and identification of the risks associated with that allocation; (B) diplomatic and development regional bureau sub-plans, incorporating feedback from the functional bureaus, that seek to promote the national interests and objectives in each respective worldwide region, including a description of key priorities and tasks for United States missions within the region and how individual missions will work together to support the regional and international plan; (C) a description of— (i) how the NDDS is integrated and coordinated with the current National Defense Strategy (as required by section 941 of the National Defense Authorization Act for Fiscal Year 2017 ( Public Law 114–328 )); and (ii) how the NDDS supports the national security strategy (as described in section 108 of the National Security Act of 1947 ( 50 U.S.C. 3043 )); (D) an identification of relationships and contributions of other United States departments or agencies that are key to the fulfillment of the plan; (E) an identification of the desired role of allied or partner nations and a diplomatic plan to encourage their cooperation in executing the NDDS