I'm not wholly convinced that this was an official policy per se, but it was and remains an inevitable consequence given all the characters in play. However, Israel must realise that the eventual payback for long term abuse will inevitably be horrendous, that's the way of it with humans. It will take at the very least a generational turn over before the abused population will be able to put aside their fear loathing and hatred of the abuser.
Syrian group says Nusra abducts its leader, in blow to U.S. plan (Reuters)
from the article: WikiLeaks: Israel aimed to keep Gaza economy on brink of collapse