The assault on Gaza is entering its 19th day with no end in sight. Israel continues its intense bombardment of the territory as Israeli troops edge closer to the heart of Gaza City.
Nearly 1,000 Palestinians have been killed, more than 4,400 injured, many of them women and children.
Thirteen Israelis have died over the same period, 10 of them soldiers. We speak with Oxford professor Avi Shlaim. He served in the Israeli army in the mid-1960s and is widely regarded as one of the worlds leading authorities on the Israeli-Arab conflict.