Rome, June 4 (LaPresse) – According to a medical source at Nasser Hospital in the Gaza Strip, at least 18 people, including children, were killed in an Israeli airstrike on a school sheltering displaced people in the southern city of Khan Younis. This was reported by Al Jazeera. Residents said that airstrikes and shelling have intensified in some areas of the city after leaflets were dropped urging people to leave and move westward.