They really believe that they can successfully convert every nation on that mapThe 10/40 Window identifies a section of the world map encompassing North Africa, the Middle East, and Asia. It extends from latitude 10 degrees N to 40 degrees N of the equator.
In and around this rectangular area lives the world's least evangelized, most unreached people groups in terms of Christian missions. The countries in the 10/40 window are either officially closed or informally opposed to Christian ministry within their borders. Citizens have limited knowledge of the gospel, minimal access to Bibles and Christian materials, and extremely restricted opportunities to respond to and follow the Christian faith.