Gazans are blocked in attempting to recover from Israel's Operation Cast Lead six months ago, the International Committee of the Red Cross said Monday.
The Red Cross said Israel's control of border crossings was restricting imports to Gaza of reconstruction, medical and other supplies.
It also said that the Fatah-Hamas rift, resulting in two Palestinian leaderships, had curbed essential water and sewer services.
The ICRC said in a report that many children suffer deep psychological problems. It said seriously ill people are unable to get the care they need.
It also said import restrictions had made it impossible to repair or replace many of the thousands of homes that were damaged or destroyed in the Israeli military action.