A series of strong explosions rocked Kyiv overnight into Thursday, hours after Ukrainian President Volodymyr Zelensky warned that intelligence data showed Russia was planning a “massive” overnight strike.

At least one person was killed in the overnight airstrikes hours after President Zelensky said that Moscow was planning a "massive" attack.

Escalating drone strikes, fuel shortages and power cuts in the region Russia annexed are among the factors turning up the heat on President Vladimir V. Putin.

Ukraine said it struck a pair of Russian oil refineries far behind the front lines on Sunday as President Vladimir Putin vowed to ramp up defenses.

A Ukrainian drone strike caused a major fire at one of Russia's largest oil refineries, marking another escalation in attacks on the country's oil infrastructure.

Ukraine ​has intensified mid- and long-range drone attacks on Russian oil facilities and ‌weapon ⁠production in recent months in response to Russia’s devastating strikes on the capital Kyiv.

Vladimir Putin is facing a fresh bout of humiliation from his own people after a poll of the country delivered historically low results for the brutal dictator. This comes as the Russian military continues to suffer devastating defeats against Ukraine.