Live: Russia says it hit Ukrainian cargo vessels, Izmail port and logistics centre

Russian President Vladimir Putin's ruling United Russia party won a large majority in the country's parliamentary elections, marked by cyberattacks and a barrage of Ukrainian drone strikes, according to results published by state media early Monday. Meanwhile, Moscow has vowed to "intensify" its strikes on Kyiv in response to the massive drone attack on the Russian capital. Follow our liveblog for the latest updates.

Yesterday's key developments:

• Ukrainian forces fired more than 1,000 drones at Russia overnight, officials said Sunday, including what Moscow’s mayor described as the “largest ever” attack on the Russian capital.

• Moscow's mayor accused Ukraine of launching an "unprecedented" attack involving more than 1,600 drones toward Russia, with the aim of "disrupting" the country's parliamentary elections.

• A Russian strike in the Kyiv region has killed at least four people, three of them children, the Ukrainian authorities said on Sunday.