Russia has used the Oreshnik ballistic missile as part of a massive overnight strike on Ukraine. Four people were killed and 25 others injured in Kyiv on Thursday night, where loud booms could be heard for several hours, setting the sky alight with explosions. It is only the second time that Moscow has used the Oreshnik, which was first deployed to hit the central city of Dnipro in November 2024. Russia's defence ministry said the strike was a response to a Ukrainian drone attack targeting Vladimir Putin's residence in late December, which Kyiv denies carrying out.

While the ministry did not specify what had been the Oreshnik's target, shortly before midnight (22:00 GMT), videos began circulating on social media showing numerous explosions on the outskirts of the western city of Lviv. President Volodymyr Zelensky and Ukrainian authorities confirmed that a ballistic missile had struck infrastructure in Lviv, about 60km (40 miles) from the Polish border.

The Oreshnik is an intermediate-range, hypersonic ballistic missile, meaning it can potentially reach up to 5,500km (3,417 miles). It is thought to have a warhead that deliberately fragments during its final descent into several independently targeted inert projectiles, causing distinctive repeated explosions moments apart.

Such a strike close to EU and Nato border is a grave threat to the security of the European continent and a test for the transatlantic community, Ukrainian foreign minister Andrii Sybiha said. The strike was launched in response to [Putin's] own hallucinations, he added, referring to the alleged drone attack on the president's residence in December.

The EU had immediately cast serious doubt on whether the drone strike ever happened, and last week Donald Trump said he did not think any such attack had taken place. On Friday, EU foreign policy chief Kaja Kallas stated that Russia's Oreshnik strike was meant as a warning to Europe and the US. Putin doesn't want peace; Russia's reply to diplomacy is more missiles and destruction. This deadly pattern of recurring major Russian strikes will repeat itself until we help Ukraine break it, she wrote on X.

Additionally, Zelensky stated that in addition to the Oreshnik, 13 ballistic missiles targeted energy facilities and civilian infrastructure overnight, along with 22 cruise missiles and 242 drones. One of the strikes also damaged a building at the Qatari embassy.

He accused the attacks of aiming against the normal life of ordinary people during a cold spell and added that everything possible was being done to restore heating and electricity.

As Lviv and other western regions were targeted on Thursday night, over a dozen missiles and hundreds of drones were deployed during the attack on Kyiv. A paramedic was among those killed while arriving at a damaged apartment in Kyiv. The capital's mayor, Vitali Klitschko, and Zelensky said it had been a double-tap hit - in which the first strike is followed by a second, killing rescuers who have arrived to help the injured.

The morning after, as the clean-up got underway, businesses that hadn't been damaged were open, while other areas sustained considerable destruction. The power supply was disrupted in several of the city's neighborhoods during a particularly harsh winter as Kyiv braces for -15C (5F) temperatures.