Of the drones "intercepted and shot down" by Russian air defences, 32 were headed towards Moscow, the ministry said in a statement posted on Telegram.

All four airports in the Russian capital were temporarily suspended, according to Rosaviatsia, Russia's civil aviation authority. St. Petersburg's Pulkovo Aiport said it was taking diverted flights.

In Ukraine, the head of the Poltava regional military administration said that Russia had attacked local energy facilities overnight, sparking fires.

In an interview last week, the CEO of Ukraine's state-run gas operator told AFP the country may be facing its toughest winter since the start of the Russian offensive in February 2022.

Naftogaz CEO Sergiy Koretsky said this year's strikes have been more intense and started earlier in the winter, compounding the impact.

According to an AFP analysis of Ukrainian air force statistics, Russia has launched record numbers of drones and missiles at Ukraine in recent months.

Ukraine and its allies have been pushing for a plan to end Europe's deadliest conflict since World War II, with officials in Kyiv on Wednesday telling AFP that an updated proposal was submitted to Washington.