Ukrainian attacks again cut off power to Russian-held areas of Zaporizhzhia; more video and pictures from Operation Spiderweb drone storm. What we know on day 1,198

Volodymyr Zelenskyy urged allies on Wednesday not to show “weakness” to Vladimir Putin, after the Russian leader threatened retaliation against recent Ukrainian strikes in a call with Donald Trump. “If the world reacts weakly to Putin’s threats, he sees that as a willingness to turn a blind eye to his actions,” Ukraine’s president said. “When he feels neither strength nor pressure, but weakness, he commits yet more crimes.”

Ukrainian drone attacks hit the power grid in Russian-held parts of Zaporizhzhia and Kherson , cutting electricity to tens of thousands of residents, Russia-installed officials said early on Thursday. Ukrainian drone attacks on Russian-held parts of the two regions cut power to about 700,000 people earlier in the week.

Russian drones struck apartment buildings in Ukraine’s second-largest city, Kharkiv, triggering fires and injuring at least nine people , the city’s mayor said early on Thursday.

Unnamed US officials have claimed to the Reuters news agency that Ukraine’s drone attack over the weekend hit an estimated 20 Russian warplanes and destroyed about 10 of them. They described the attack as highly significant. Ukraine says its “Operation Spiderweb” – which used drones hidden on board trucks – targeted four airbases across Russia with 117 UAVS carrying bombs, hitting 41 Russian aircraft, around half of them beyond repair. Ukraine’s SBU spy agency said it caused $7bn worth of damage and 34% of the strategic cruise missile carriers at Russia’s main airfields were hit.