From the Document: "The 2018 National Military Strategy describes how the U.S. military is to defend the homeland and retain its competitive advantage to deter competitors and defeat adversaries, whether great power competitors like China and Russia or other security challenges. It is a fundamental departure from other National Military Strategies post-September 11 , which focused on counterinsurgency and defeating violent extremist organizations. In essence, the 2018 National Military Strategy refocuses the Army from fighting counterinsurgencies and violent extremist organizations to countering and possibly confronting Russian and Chinese military forces. The Army's new AimPoint initiative is intended to be the means to build the force structure needed to implement this new focus."
CRS In Focus, IF11542
Congressional Research Service: https://crsreports.congress.gov/