people have been trapped in gaza since israel tightened its siegejust over three weeks ago, after it was attacked by hamas, which is classed as a terrorist organisation by the uk and other governments. and in northern gaza, there s been another air strike onjabalia, a day after an israeli attack killed dozens of people at the refugee camp there. israel says its forces killed another hamas commander in the latest strike, but un human rights officials say it could be a war crime. our international editor jeremy bowen has our first report, which contains material you may find upsetting. at last, the gates of the rafah crossing were opened. some foreign citizens were allowed to leave gaza for egypt. for the first time, since israel imposed its siege. convoys of aid trucks are moving into gaza, though not nearly as many as the un and aid agencies say are necessary. ambulances went in for the seriously wounded. injabalia, at the opposite end of the gaza strip, more israeli raids. t