GAZA CITY, Palestine / ISTANBUL At least 12 Palestinians were killed in renewed Israeli airstrikes in the Gaza Strip on Tuesday, medics said. A medical source said three family members lost their lives in Israeli shelling of a tent sheltering displaced civilians in the northern town of Beit Lahia. Three more people were killed when Israeli forces bombed the Shejaiya neighborhood in Gaza City. A fourth Palestinian died of his wounds sustained in an earlier Israeli strike in the same neighborhood.