GAZA CITY, Palestine At least six Palestinians, including two children, were killed on Sunday in fresh Israeli airstrikes in the central Gaza Strip, a medical source said. Fighter jets hit a house in the Bureij refugee camp, leaving four people dead, the source said. Two children also lost their lives while several people were injured in another strike targeting a tent in the Maghazi refugee camp, the source added. Artillery shelling was also reported in the Nuseirat refugee camp in central