... Lack of Israeli ideas. Originally, the reason for the siege on Gaza was to make the Gazans feel miserable compared to West Bankers who should feel their situation improving, so the people of Gaza would topple Hamas. When was the last time a people's revolt caused an Arab regime to fall? Arab regimes fall as a result of a military revolt, not "people power". The policy obviously failed to achieve its goal, especially since the West Bank was also not opened up to commerce. Now the story is: How can we lift the siege while Shalit remains captive? He has been held for three and a half years, so it is unlikely the new improved reason is working. How then does Israel see the future of Gaza? I think Israeli leaders simply don't know. They don't want to retake Gaza, which they had an opportunity to do in Cast Lead. But you never know what the future would bring. If the pot keeps boiling, there will eventually be an eruption, and the people without a clue would face the unhappy future.
from the article: UN official to Haaretz: Israel 'nourishing despair' in Gaza