KYIV, Ukraine (AP) — Ukraine’s leader pledged to push for victory in 2023 as he and other Ukrainians on Friday marked the somber anniversary of the Russian invasion that upended their lives and Europe’s security.

It was Ukraine’s “longest day,” President Volodymyr Zelenskyy said, but the country’s dogged resistance a year on has proven that “every tomorrow is worth fighting for.”

On a day of commemorations, reflection and tears, the Ukrainian president’s defiant tone captured the national mood of resilience in the face of Europe’s biggest and deadliest wa r since World War II. Zelenskyy, who has himself become a symbol of Ukraine’s refusal to bow to Moscow, said Ukrainians proved themselves to be invincible during “a year of pain, sorrow, faith and unity.”

“We have been standing for exactly one year,” Zelenskyy said. February 24, 2022, he said, was “the longest day of our lives. The hardest day of our modern history. We woke up early and haven’t fallen asleep since.”

Ukrainians wept at memorials for their tens of thousands of dead — a toll growing inexorably as fighting rages in eastern Ukraine in particular. Although Friday marked the anniversary of the full-scale invasion, combat between Russian-backed forces and Ukrainian troops has raged in the country’s east since 2014. New video from there shot with a drone for The Associated Press showed how the town of Marinka has been razed, along with others.

And the killing continued: Russian shelling killed another three civilians and wounded 19 others in the most recent 24-hour spell, Ukraine’s presidential office said.

Around the country, Ukrainians looked both back and forward.

“I can sum up the last year in three words: Fear, love, hope,” Oleksandr Hranyk, a school director in Kharkiv, Ukraine’s second-largest city, said.

Lining up in the capital, Kyiv, to buy anniversary commemorative postage stamps, Tetiana Klimkova described her heart as “falling and hurting.”

Still, “this day has become a symbol for me that we have survived for a whole year and will continue to live,” she said. “On this day, our children and grandchildren will remember how strong Ukrainians are mentally, physically, and spiritually.”

But peace is nowhere in sight. China on Friday called for a cease-fire — an idea Ukraine has previously rejected for fear that a pause would allow Russia to regroup militarily after bruising battlefield setbacks. A top aide to Zelenskyy, Mykhailo Podolyak, said China’s proposals, if implemented, would freeze the war and lead to Ukraine’s defeat.

A 12-point paper issued by China’s Foreign Ministry also urged an end to sanctions that were intended to squeeze Russia’s economy.

That suggestion also looks like a non-starter, given that Western nations are working to further tighten the sanctions noose, not loosen it. The U.K. government imposed more sanctions Friday on firms supplying military equipment to Moscow and said it would bar exports to Russia of aircraft parts and other components.

“Ukraine is entering a new period, with a new task — to win,” Ukrainian Defense Minister Oleksiy Reznikov said on Facebook.

“It will not be easy. But we will manage,” he said. “There is rage and a desire to avenge the fallen.”

Ukraine is readying another military push to roll back Russian forces with the help of weaponry that has poured in from the West. NATO member Poland said Friday that it had delivered four advanced Leopard 2A4 tanks, making it the first country to hand the German-made tanks over to Ukraine.

The prime minister of Poland said on a visit to Kyiv that more Leopards are coming. Poland’s defense minister said contributions from other countries would help form Ukraine’s first Leopard battalion of 31 tanks.

Air raid alarms didn’t sound overnight in Kyiv and the morning started quietly, allaying concerns that Russia might unleash another barrage of missiles to pile yet more sadness on Ukraine on the anniversary.

Still, the government recommended that schools move classes online, and office employees were asked to work from home. And even as they rode Kyiv’s subway to work, bought coffee and got busy, Ukrainians were unavoidably haunted by thoughts of loss and memories of when missiles struck, troops rolled across Ukraine’s borders and a refugee exodus began a year ago.