The ten page document identifies the following as a top national security challenge: "How to maintain U.S. strategic primacy in the Indo-Pacific region and promote a liberal economic order while preventing China from establishing new, illiberal spheres of influence."
Covered by ZeroHedge
https://www.zerohedge.com/geopolitical/trump-declassifies-sensitive-document-strategy-defend-dominate-deny-indo-pacific-china