For 18 months my people in Gaza have been under siege, incarcerated inside the world's biggest prison, sealed off from land, air and sea, caged and starved, denied even medication for our sick. After the slow death policy came the bombardment. In this most densely populated of places, nothing has been spared Israel's warplanes, from government buildings to homes, mosques, hospitals, schools and markets. More than 540 have been killed and thousands permanently maimed. A third are women and children. Whole families have been massacred, some while they slept.