Key developments on Sept. 4: Casualties reported in Lviv, Kryvyi Rih as Russia launches another mass attack on UkraineUkrainian military uses ‘dragon drones’ against Russia, Defense Ministry saysGermany orders 17 IRIS-T air defense systems for Ukraine, Scholz saysUkraine, Ireland sign agreement on cooperation, supportRussia executed 3 Ukrainian POWs in Donetsk Oblast, prosecutors sayAt least seven civilians were killed and 64 injured in Lviv in the early hours of Sept. 4 amid Russia’s attack against Ukraine, regional authorities reported. Children were among the casualties. Several explosions …