Israel faced international condemnation Thursday after a strike killed 18 people at a school-turned-shelter for displaced Palestinians in war-torn Gaza. The attack flattened part of the UN-run Al-Jawni school in Nuseirat on Wednesday, leaving only a charred heap of rebar and concrete. “For the fifth time, Israeli forces bombed the UNRWA-run Al-Jawni School, killing 18 citizens,” Gaza civil defence spokesperson Mahmud Bassal wrote on Telegram, referring to the UN agency for Palestinian refugees. UNRWA later said six of its staff had been killed in two Israeli strikes on the school and its surro…