During his annual Victory Day speech in Moscow's Red Square on Tuesday, Russian President Vladimir Putin claimed that the Ukraine war was "unleashed" on Russia and blamed "Western global elites" while calling Ukrainian President Volodymyr Zelenskyy a puppet.

Putin also directly compared his ongoing war in Ukraine to the Soviet Union's victory over Nazi Germany in 1945, which is what Victory Day commemorates. He claimed that Russia "once again" was fighting for "civilization" and he painted a topsy-turvy picture that Moscow wants peace with all nations.

"Today, the civilization is once again at a decisive, turning point and an actual war has been unleashed against our homeland again," Putin said. "But we fended off international terrorism, we will protect residents of Donbas too and ensure our security."

Putin's speech made clear once more that the Russian president has no intention of negotiating currently or scaling back his ambitions to defeat Ukraine.

However, the Victory Day military parade in Moscow was a significantly shrunken version of itself on Tuesday, compared with previous years, due to Russia's huge losses in Ukraine and its urgent need for equipment. There appeared to be approximately 50 military vehicles taking part in this year's event compared with 130 during the 2019 parade. Tuesday's parade was also comprised of nearly all high armored vehicles, similar to Humvees.

The flypast part of the event, which usually involves helicopters and fighter jets, was cancelled on Tuesday despite clear, sunny skies in the Russian capital. But perhaps what was most notable was the cancelling of the parade in at least 24 Russian cities due to security concerns that Ukrainian forces might be able to strike them, likely because of Russia's shortages of troops and equipment.

-ABC News' Patrick Reevell

Air raid sirens went off across Ukraine around 5 a.m. local time Tuesday.

Air defense systems were activated in the Kyiv region.

The Russian airstrike on Kyiv was the "fifth air attack" on the capital since the beginning of May, the Kyiv City Military Administration said on Telegram.

About 15 Russian missiles were launched at Kyiv and intercepted by the Ukrainian air defenses around Kyiv with "no casualties and major damage," the city military administration added.-ABC News' Yulia Drozd and Yuriy Zaliznyak

Four people were injured from falling debris after a Russian drone was shot down above Kyiv, Mayor Vitali Klitschko said on Telegram.

Three of the people injured were at the site of the explosion in Solomyanskyi district of Kyiv, and one was in the Svyatoshynskyi district of Kyiv, where wreckage fell on a residential building, the mayor added.

Debris also fell on runway at the Zhulyany airport in the Solomyansky district of Kyiv, the head of the Kyiv City Military Administration Serhiy Popko said on Telegram.

In Odesa, Russian troops launched a missile attack from strategic aircraft, Ukrainian Operational Command South said on Facebook. The X-22-type rockets used by the Russians were "aimed at one of the food companies and recreational zones on the Black Sea coast," the Operational Command South said.

Rescue services are working to put fires out, and no information about the number of people injured was immediately available, they added.

-ABC News' Max Uzol and Natalia Kushniir

Air alert sirens went off in several regions of Ukraine late Sunday evening as Russian forces launched a widespread airstrike on the country.

Air alert sirens went off in central and southeastern Ukraine, including in the Odesa, Kyiv, Zaporizhia, Dnipropetrovsk, Kherson and Mykolaiv regions of Ukraine.

Kh-22 missiles were launched toward Odesa, unofficial Telegram channels reported. The air defense systems were activated in response to the attack and repeated explosions were heard in the area, unofficial channels reported.

-ABC News' Max Uzol and Anastasia Bagaeva

Russia’s Wagner mercenary group said it will retreat from Bakhmut because of severe shortages in ammunition, according to Yevgeny Prigozhin, the group's leader. He said his forces would withdraw on May 10, blaming Russia’s defense ministry for the retreat.

Wagner has played a crucial role for months in the fighting for Bakhmut, sustaining huge casualties. The announcement and the suggestion of bitter infighting within Russia’s military forces signals division and disorganization just as Russia is bracing for a major Ukrainian counteroffensive.

Prigozhin said he was taking the decision in retaliation against Russia’s military leadership, which he accused of deliberately starving his troops of ammunition because they are jealous of Wagner’s success.

Prigozhin and Russia’s defense ministry have been in a one-sided public feud for months. Prigozhin claims it's now reached a breaking point, delivering a blistering attack on Russia's senior military command in the video announcing the withdrawal. He accused them of being "cowards" and of denying Russians a victory in Bakhmut because of their "petty envy."

Ukrainian military officials said they did not believe Wagner forces would retreat from Bakhmut, suggesting they believed his announcement was an attempt to excuse his failure to seize the city by May 9 as he pledged. A spokesman for Ukraine's eastern command, Sergiy Cherevatyi, said Wagner was running out of fighters, not ammunition.

-ABC News' Patrick Reevell