Israel women trafficking soars - BBC: "Between 3,000 and 5,000 women have been smuggled into Israel in the past four years to work as prostitutes, according to a parliamentary inquiry. The report described how the women are sold at public auctions for as much as $10,000 and forced to work up to 18 hours a day. On average the women receive only three percent of the money they earn from prostitution, the report said."

What is the cause?