Today marks the first anniversary of Russia's invasion of Ukraine. Here's a look back at what world leaders said that day.

NATO Secretary-General Jens Stoltenberg: "We now have war in Europe, on a scale...we thought belonged to history.”

Then-UK PM Boris Johnson told Parliament that he was open to setting up a war crimes tribunal to hold Putin accountable.

Johnson: "[We are working to set up a] war crimes tribunal for those involved in war crimes in the Ukraine theatre."

Johnson: "Putin's squalid venture should ultimately fail, and be seen to fail."

President Joe Biden announced additional sanctions on Russian elites and banks in response to the attack.

Biden: "[His] choice to make a...unjustifiable war...will have left Russia weaker and the rest of the world stronger."

Biden: "Putin’s actions betray a sinister vision for the future of our world, one where nations take what they want..."

Canadian PM Justin Trudeau said that he was working with G-7 allies on a broad sanctions package against Russia.

Trudeau: "In the face of these attacks...Canada will take additional action to stop Russia’s unwarranted aggression."

Trudeau: “Russia’s brazen acts will not go unpunished.”

European Commission chief Ursula von der Leyen also announced a slew of new financial sanctions against Russia.

The EU's sanctions froze Russian assets in the EU and cut off Russian banks' access to the EU market.

Von Der Leyen: “We will weaken Russia’s economic base and its capacity to modernise.”

Japanese PM Fumio Kishida also condemned the attack and vowed to work with Western allies on further sanctions.

UN Secretary-General Antonio Guterres pleaded with Putin to halt Russia's war on Ukraine.

Guterres: “This is the saddest moment in my tenure as secretary-general of the UN.”