A modern crusade would be nice, but with modern rules and laws, if they are a civil people who are not a threat such as most of islam leave them alone, such as egypt Jordan oman. But if they are in europe and will not assimate into the local culture send them back across the bosphorus on a catapult. Then set up a christian buffer like Isreal in Nikomedia and Izmir, fill it with greeks nationalist, and it buys europe atleast a 100 years free of islam
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The enemy is in front of us, the enemy is behind us, the enemy is to the right and left of us. They cant get away this time! - General Douglas Mcarthur