They're either assimilating, or they're losing part of their own culture, and the way that's happening is through the language. Kit's Incirkuk site is at a military base. But there are plenty of surprises in the way of the customs of the people. We try to do as much sightseeing as we can, and meet some of the people who lives in the area, in the short time that we're there. It makes your world a lot bigger, and helps you to understand yourself and your own customs, too.
Bilingualism just enhances that process.
Knowing another language opens up opportunities for understand and for peace.