Energy analysts have estimated that 25% or more of Russia’s oil refining capacity has been taken offline by Ukraine's drone attacks.

Iryna Moskaeva and her children jumped out of their beds and started running after an explosion rocked their Kyiv apartment early on Thursday, in a major Russian attack that killed 18 people across the Ukrainian capital.

The United States is said to have passed Warsaw a warning that Moscow is considering an armed provocation against Poland to "test NATO's resolve".

Moscow's campaign for students to sign army contracts comes as the Kremlin seeks to sustain its war effort for a fifth year.

Russian dictator Vladimir Putin has hatched a plan to “provoke” NATO by launching attacks and possibly even an incursion against alliance member Poland. The Telegraph writes that Washington has sent warnings to Warsaw over new intelligence suggesting the country’s critical infrastructure could become the target of missile and drone strikes by the Kremlin.

Dozens were injured overnight in Kyiv during an attack that caused fires and explosions throughout the city.