A major area of intense persecution today is in the "10/40 Window" where 97% of the world's least evangelized people live. This rectangular area extends from West Africa across Asia, between the 10th and 40th parallels north of the equator.

There are 1.6 billion Muslims, Hindus and Buddhists living in this window, and in some countries the Church has almost been eliminated as a result of Islamic oppression. The Christian population there is less than 2 percent, a small but precious minority.