Missiles have rained down across Ukraine, marking a significant escalation in Russia's aggression in the war.
At least 11 people have been killed and scores more injured, as Russia launched more than 80 cruise missiles and kamikaze drones in the midst of the morning hour rush.
Many of the locations targeted were civilian sites or key pieces of infrastructure, including the country's electricity grid.
Explosions have rocked the centre of Kyiv too - the first time the capital's been targeted in months.
Russia's president Vladimir Putin says the strikes were in revenge for the weekend's bombing of a bridge linking Russia to Crimea, which he called an 'act of terrorism'.
But in a defiant gesture, Ukraine's leader Volodymyr Zelensky filmed himself out on the streets of Kyiv after the attacks, saying it's the Russians who are the terrorists.
University of Otago professor of politics and international relations, Dr Robert Patman, says the Russian missile strikes won't have the effect Putin hopes they might.
He says they will likely only strengthen Ukraine's resolve in the east of the country.
Dr Patman spoke to Kim Hill.