The Egyptian mediators who had no lost love with Hamas said on a number of occasions that the Israeli government reneged on agreements that could have freed Shalit a long time ago. Israel believed it can wear down Hamas with the blockade and that policy failed. The government should re establish the Egyptian meditation and bring this 4 year saga to an end. Shalit had become to forgotten soldier.
UN warns Turkey against calling buffer a 'safe zone' unless guarantees civilians' safety (Reuters)
from the article: Netanyahu urges international community to work to free Gilad Shalit