Russian President Vladimir Putin launched a predawn attack on Ukraine Thursday, hitting cities with airstrikes and sending tanks across the border. The move, which U.S. intelligence agencies have been predicting for months, was widely condemned by world leaders.
President Biden, who convened a virtual meeting with G-7 allies early Thursday, was scheduled to address Putin’s “unprovoked and unjustified” assault in an address to the nation Thursday afternoon.
Here’s what to know about Russia’s invasion of Ukraine.
What exactly happened?
In a televised speech just before 6 a.m. Moscow time, Putin announced that his forces were entering Ukraine in what he described as a “special military operation” aimed at the “demilitarization and de-Nazification” of the sovereign nation. Within moments of Putin’s address, distant explosions were witnessed by reporters in the Ukrainian cities of Kyiv, Kharkiv and Odessa as Ukrainians woke up to a new, uncertain reality.
Have there been any casualties?
Oleksii Arestovich, an adviser to Ukrainian President Volodymyr Zelensky, said at least 40 people had been killed and dozens others wounded in the attack so far. But given the size and sweep of the Russian invasion, it’s safe to expect that the actual number of casualties is higher.
How did Ukraine respond?
Zelensky cut diplomatic ties with Moscow and declared martial law.
“As of today, our countries are on different sides of world history,” he tweeted. “Russia has embarked on a path of evil, but Ukraine is defending itself and won’t give up its freedom.”
The Ukrainian president said Russian forces were trying to seize the Chernobyl nuclear plant, site of the world’s worst nuclear disaster in 1986, and Ukrainian forces were battling other troops just miles from Kyiv, the Ukrainian capital, for control of a strategic airport.
Zelensky also described the invasion as “a declaration of war against the whole of Europe.”

