Okay kiddo, so there is a group of people called ISIS or ISIL, and they do very bad things like hurting and killing innocent people. And sometimes they take girls and women who are not from their group and make them marry their fighters. These girls and women are called "brides of ISIS" or "brides of ISIL". It's really not nice or fair, and it makes a lot of people sad and angry. It's important to remember that everyone should have the right to choose who they want to marry and not be forced into it.