This week's puzzle is simple to explain, but might not be so easy to solve.
Very simply, all you have to do is find the next in the following sequence:
NATO
Wicca
Israel
Commonwealth
The next in the sequence is Rub-el-Hizb , also known as the Arabian Islamic Star.
The NATO star has four points, Wicca uses the Pentangle or five-pointed star, Israel uses the six-pointed Star of David, and the Commonwealth Star (seen on the flag of Australia) has seven points.
Rub-el-Hizb has eight points