Russian missiles have torn through the Ukrainian government's main building in Vladimir Putin's boldest act of war since the conflict began in 2022.

The dramatic attack on the Cabinet of Ministers came as more than 800 drones and missiles were launched into Ukraine overnight in what has been branded an 'escalation of terror' by Ukraine's foreign minister.

Andrii Sybiha said the move 'needs to get a strong response from our allies' as she shared images of the government office, where plumes of smoke could be seen billowing for miles.

He wrote on X: 'Civilians killed and injured, civilian infrastructure damaged in Kyiv, Odesa, Kremenchuk, Kryvyi Rih, Zaporizhzhia, among other cities.

'For the first time since the beginning of full-scale war, Russia damaged the Ukrainian Government building in Kyiv. This alone is a serious escalation.