Flags with an image of captured Israeli soldier Gilad Shalit hang outside a protest tent set up in support of captured Israeli soldier Gilad Shalit, outside Israeli Prime Minister Benjamin Netanyahu's residence in Jerusalem. The parents of Gilad, together with thousands of supporters, finished a cross-country 12-day march a few days ago, campaigning for the release of their son who has been held captive by the Hamas for more than four years. The number 1477 refers to the amount of days gilad has been held captive. July 11, 2010. Photo by Miriam Alster/FLASH90

Israeli author Meir Shalev visits Aviva Shalit, mother of captured Israeli soldier Gilad Shalit, in a protest tent set up in support of Gilad, outside Israeli Prime Minister Benjamin Netanyahu's residence in Jerusalem. The parents of Gilad, together with thousands of supporters, finished a cross-country 12-day march a few days ago, campaigning for the release of their son who has been held captive by the Hamas for more than four years. July 11, 2010. Photo by Miriam Alster/FLASH90

Noam Shalit, father of captured Israeli soldier Gilad Shalit, ties a campaign ribbon around the arm of his wife, Aviva, outside a protest tent set up in support of Gilad, outside Israeli Prime Minister Benjamin Netanyahu's residence in Jerusalem. The parents of Gilad, together with thousands of supporters, finished a cross-country 12-day march a few days ago, campaigning for the release of their son who has been held captive by the Hamas for more than four years. July 11, 2010. Photo by Miriam Alster/FLASH90