Which lines of effort is the greatest challenge to Operation Inherent Resolve

Which lines of effort is the greatest challenge to Operation Inherent Resolve?

Reference Material:
DoD Special Report – Inherent Resolve https://dod.defense.gov/OIR/
Compose and submit a paper answering the following question:
Briefly describe which of the lines of effort listed is the greatest challenge to OIR (combat
operations, information operations or building partner capacity). Next, explain how the DOD can
overcome that challenge. Fully support and defend your answer using logic and citations of
supporting material where appropriate (course material, doctrine, outside sources).
The final submission must include a Cover Page, Abstract, Body of the paper, and Endnotes