The main UN aid agency in war-ravaged Gaza said an Israeli strike on Wednesday hit one of its warehouses, killing an employee, as calls intensified for land routes to bring food into the besieged territory. “At least one UNRWA staff member was killed and another 22 were injured when Israeli forces hit a food distribution centre in the eastern part of Rafah” in southern Gaza, the United Nations agency for Palestinian refugees said in a statement. The agency’s chief, Philippe Lazzarini, said the “attack on one of the very few remaining UNRWA distribution centres in the Gaza Strip comes as food s…