Ottawa, Canada - Establishing a lasting peace in Ukraine requires "a willing Russia," Canadian Prime Minister Mark Carney said Saturday, denouncing the "barbarism" of Moscow's latest bombardment of Kyiv as he met with Volodymyr Zelensky.

"We have the conditions... of a just and lasting peace, but that requires a willing Russia, and the barbarism that we saw overnight... shows just how important it is that we stand with Ukraine," Carney said as the Ukrainian leader stopped in Halifax, Nova Scotia, en route to meet US President Donald Trump in Florida.

The Canadian leader announced $1.82 billion in fresh economic assistance for Ukraine that he said would help unlock international financing "to begin this process of rebuilding" the country after almost four years of war since Russian forces invaded.

Joined by Carney, Zelensky was to hold a video call with European leaders from Halifax, before continuing his journey to Florida for what he said he hoped would be "very constructive" talks with Trump on a new, 20-point plan to end the war.

The Ukrainian leader said the 10-hour bombardment on Kyiv and surrounding regions overnight was "Russia's answer to our peace efforts."

He added: "And this really showed that Putin doesn't want peace, and we want peace."

Some 500 drones and 40 missiles pounded Kyiv and its surrounding region overnight, killing two, wounding dozens and cutting power and heating to hundreds of thousands amid freezing temperatures, Ukrainian authorities said.