2nd Advice would be to call a Summit 'tween Western Leaders and Principles within the Islamic Faith who claim to be in favor of "Moderate Islam" to hammer out a solution to the ongoing for 1400 years now Terror and War, MISERY that the tenets of the ideology of Islam demand.
So as to try and form a coalition to finally lessen this problem.
"Principles within the Islamic Faith" not including those that favor Sharia Law but instead those within the Muslim Faith that don't share the feeling that Sharia must be.
Those who Demand Sharia (or just Muslim Dominance/Control/Supremacy) on Earth cannot be bargained with, their Faith does not allow an alternative to Muslim Dominance/Control/Supremacy.
Sooner that Infidels grasp, understand and accept this truth the sooner true progress towards a solution can be possibly created and no solution will ever be found without Muslims at the table, short of wiping 1/4th of the world's population from the face of the Earth somehow.
"Moderate Muslims" need to step up. And they need to do this in very very Large Numbers.
That takes place or little real progress unto a Lasting Peace ever gets made.