Russia-Ukraine updates: Putin suspends key US-Russia nuclear treaty in speech denouncing West

Russia on Monday morning again launched a series of coordinated strikes across Ukraine, targeting energy infrastructure, including in the Kyiv region.

Ukraine's military said it shot down 44 cruise missiles as the Russians launched "several waves of missile attacks on critical infrastructure facilities" across the country.

About five distant booms could be heard in central Kyiv at about 8 a.m. local time.

Kyiv's mayor, Vitali Klitschko, confirmed that a power plant has been hit, meaning mid-morning around 350,000 homes in the capital were left without power. Kyiv's water supply has also been compromised, according to a water company.

A local official said "critical infrastructure" had also been hit in the Chernivtsi region in southwestern Ukraine.

Critical infrastructure has also been hit and damaged in Zaporizhzhia in the south, according to another local official.

Other regions of Ukraine appear to have been targeted, including Kharkiv, Odesa, Dnipro, Poltava and Lviv.

There are currently no reports of significant casualties.

-ABC News’ Tom Soufi Burridge

U.S. Secretary of State Antony Blinken slammed Russia's decision to pull out of the Black Sea Grain Initiative as a statement from the Kremlin that "people and families around the world should pay more for food or go hungry."

Russia announced it is withdrawing from the U.N.-brokered grain deal in response to a drone attack Saturday in the waters of the Sevastopol Bay, in the Black Sea near Crimea.

Russia's decision, Blinken said, is jeopardizing grain shipments he described as "life saving."

"In suspending this arrangement, Russia is again weaponizing food in the war it started, directly impacting low- and middle-income countries and global food prices, and exacerbating already dire humanitarian crises and food insecurity," Blinken said in a statement released Saturday night.

He said 9 million metric tons of food has been shipped under the agreement, which was signed and launched in July. He said the shipments have reduced food prices around the world.

"We urge the Government of Russia to resume its participation in the Initiative, fully comply with the arrangement, and work to ensure that people around the world continue to be able to receive the benefits facilitated by the Initiative," Blinken said.

Blinken's statement echoed what President Joe Biden said earlier Saturday, calling Russia's withdrawal from the initiative, "purely outrageous."

"It's going to increase starvation. There's no reason for them to do that, but they're always looking for some rationale to be able to say the reason they're doing something outrageous is because the West made them do it. And it's just not," Biden said. "There's no merit to what they're doing. The UN negotiated that deal and that should be the end of it."

Russia claims that its withdrawal from the U.N.-brokered grain deal was a response to a drone attack Saturday in the waters of the Sevastopol Bay, in the Black Sea near Crimea.

"The Ukrainian armed forces, under the cover of a humanitarian corridor created as part of the implementation of the 'Black Sea Initiative' to export Ukrainian agricultural products, launched massive air and sea strikes using unmanned aerial vehicles against the ships and infrastructure of the Russian Black Sea Fleet at the naval base in Sevastopol," the Russian Foreign Ministry said in a statement.

Russia claimed the drones did not cause serious damage to infrastructure and that the Black Sea Fleet destroyed all the drones.

Russia accused British specialists of being involved in preparing the attack and training the Ukrainian military in the city of Ochakov.

"According to available information, representatives of this unit of the British Navy took part in the planning, support and implementation of a terrorist act in the Baltic Sea on September 26 this year to undermine the Nord Stream 1 and Nord Stream 2 gas pipelines," the Russian military claimed.

-ABC News' Natalia Shumskaia and Anastasia Bagaeva

Russia accused the British army of carrying out a "terrorist act" in the Baltic Sea to undermine the Nord Stream 1 and Nord Stream 2 gas pipelines on Sept. 26.

"According to available information, representatives of this unit of the British Navy took part in the planning, provision and implementation of a terrorist act in the Baltic Sea on September 26 this year to undermine the Nord Stream-1 and Nord Stream-2 gas pipelines," the Ministry of Defense said in a statement.

The British Ministry of Defense denied the accusation calling it an "invented story."

"To detract from their disastrous handling of the illegal invasion of Ukraine, the Russian Ministry of Defence is resorting to peddling false claims of an epic scale. This invented story, says more about arguments going on inside the Russian Government than it does about the west," the British Ministry of Defense said in a statement on Twitter.

-ABC News' Rashid Haddou-Riffi