A Ukrainian soldier told BI that the thermonaric warheads have gotten bigger, while a first responder said Russia is using them more frequently.

Russia attacked cities across Ukraine with hundreds of drones and a missile strike, hitting energy infrastructure and wounding at least 15 people.

Russia launched its largest drone and missile bombardment of Ukraine overnight into Wednesday, according to Ukrainian President Volodymyr Zelenskyy.

Ukraine said it struck a Russian air base on Saturday, while Russia continued to attack Ukraine with hundreds of drones overnight as part of a stepped-up bombing campaign that has dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

(Reuters) -Russian air defence units downed six Ukrainian drones headed for Moscow on Sunday, mayor Sergei Sobyanin said. Sobyanin, writing on the Telegram messaging app, said specialists were examining fragments of the drones near the Russian capital.

(Reuters) -Russian air defences shot down four Ukrainian drones headed for Moscow on Saturday, the city's mayor said, while one of the capital's main airports temporarily halted outgoing flights. Mayor Sergei Sobyanin said emergency services were working at the sites of the downed drones, but gave no information on potential damage.

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As Russia intensifies its air strikes against Ukraine, its tactics have visibly shifted, with a growing number of missile and drone attacks now targeting western regions once considered relatively safe.