Every human being who has a physical or spiritual need is a valid mission field for those who want to incarnate the love of Jesus, regardless of where they live. At the same time, it is easy to see where the greatest concentrations of this unevangelised population lie.
This good news of the kingdom [the gospel] will be preached throughout the whole world as a testimony to all the nations, and then the end [of the age] will come. – Matthew 24:14
Just in terms of these five nations — Pakistan, India, Nepal, Bangladesh and China — the challenge we face in ministries like the one I am with, Partners International, and many other mission ministries, is the opportunity of reaching them.