Bombing won’t solve all the problems in Syria, according to Adm. Jim Stavridis, former NATO commander.

“We need both hard power against ISIS but also smart power to solve the complex web of challenges in Syria,” wrote Stavridis in a report for the Huffington Post.

Stavridis suggests a six-step approach to stability in Syria, which includes provisions about including Russia and Iran, partitioning Syria, and separating the Islamic State campaign from the Syrian Civil War.

He added, “We need a coherent political solution, which will best be constructed through diplomacy, not the war rooms of the Pentagon, NATO and Moscow.”