Key developments on Sept. 3: Russia strikes Poltava with ballistic missiles, killing at least 51, injuring 271Ukraine plans to ‘indefinitely’ hold Kursk Oblast’s seized territories, Zelensky saysRussian strikes damage overhead power line at occupied Zaporizhzhia Nuclear Power Plant, Energoatom saysNorway pledges $53 million for drones, air defense for UkraineDrone appears to drop molten thermite on Ukraine’s southern frontRussian forces launched two ballistic missiles against the city of Poltava on Sept. 3, killing at least 51 and injuring 271 people, according to the latest information shared…