Ukrainian President Volodymyr Zelenskyy has called on the international community to join together to step up pressure against Russia on the second anniversary of Moscow's invasion.

Zelenskyy spoke at a ceremony near Kyiv on Saturday. Italian Prime Minister Giorgia Meloni, European Commission President Ursula von der Leyen and other leaders attended the event.

Zelenskyy said, "Ukrainians did not betray their independence. The world did not fail, did not make a mistake and supported Ukraine." He went on to thank the friends and partners of Ukraine.

Zelenskyy also said that Russian President Vladimir Putin must be defeated in every respect, as that is the only way to achieve peace.

Meanwhile, Russia's defense ministry said on Saturday that defense minister Sergei Shoigu had inspected frontline units in Ukraine. It said Shoigu instructed all necessary supplies to be delivered to the troops as soon as possible.

Officials also said Shoigu spoke of plans to supply the troops with drones controlled with artificial intelligence technologies. He reportedly said that the drones will become very important weapons.

The UK defense ministry said in its intelligence update that Russia likely lost about 350,000 personnel in the two years of conflict. It said Russia also lost over 2,700 tanks as well as 5,000 infantry fighting vehicles and armored personnel carriers.

But it also says that Russian forces have been replenished by mobilization and recruitment, and refurbishment of existing stockpiles. It notes that they are now able to maintain attacks along the frontline and pursue a strategy of attrition against Ukraine.