He wrote a memo
www.whitehouse.gov/the-press-office/2017/01/28/plan-defeat-islamic-state-iraq
Sec. 1. Policy. It is the policy of the United States that ISIS be defeated.
(ii) Within 30 days, a preliminary draft of the Plan to defeat ISIS shall be submitted to the President by the Secretary of Defense.
(iii) The Plan shall include:
(A) a comprehensive strategy and plans for the defeat of ISIS;
(B) recommended changes to any United States rules of engagement and other United States policy restrictions that exceed the requirements of international law regarding the use of force against ISIS;
(C) public diplomacy, information operations, and cyber strategies to isolate and delegitimize ISIS and its radical Islamist ideology;
(D) identification of new coalition partners in the fight against ISIS and policies to empower coalition partners to fight ISIS and its affiliates;
(E) mechanisms to cut off or seize ISIS's financial support, including financial transfers, money laundering, oil revenue, human trafficking, sales of looted art and historical artifacts, and other revenue sources; and
(F) a detailed strategy to robustly fund the Plan.