A massive barrage of Russian strikes hit critical infrastructure in Kyiv, Kharkiv and other Ukrainian cities on Monday morning, knocking out water and power supplies in apparent retaliation for what Moscow alleged was a Ukrainian attack on its Black Sea Fleet over the weekend.

Russia has intensified its attacks on Ukraine’s power plants and other key infrastructure as the war enters its ninth month. Large parts of Ukraine are already experiencing rolling power cuts as a result of Russia’s strategy.

Russia’s Defense Ministry said its forces carried out “strikes with long-range high-precision air and sea-based weapons against the military command and energy systems of Ukraine.”

“The goals of the strikes were achieved. All designated targets were hit,” the ministry said in a statement.

Meanwhile, 12 ships with grain left Ukrainian ports on Monday despite a Russian threat to reimpose a blockade that threatened hunger across the world, Ukraine’s Ministry of Infrastructure said. One vessel carried Ukrainian wheat to Ethiopia where a severe drought is affecting millions of people.

Ukraine’s air force said it shot down 44 of more than 50 cruise missiles that were launched by Russia.

Ukrainian Prime Minister Denys Shmyhal said Russian missiles and drones hit 10 Ukrainian regions and damaged 18 sites, mostly energy facilities.

Hundreds of localities in seven Ukrainian regions were left without power, he said in a Facebook post, adding that “the consequences could have been much worse” if the Ukrainian forces hadn’t shot down most of the Russian missiles.

Thirteen people were wounded as a result of morning attacks, the head of National Police Ihor Klymenko said on national television.

Loud explosions were heard across the Ukrainian capital in the early morning as residents prepared to go to work. The emergency services sent out text message warnings about the threat of a missile attack, and air raid sirens wailed for three hours during the morning commute.

“The Kremlin is taking revenge for military failures on peaceful people who are left without electricity and heat before the winter,” Kyiv region Gov. Oleksii Kuleba said.

Kyiv Mayor Vitali Klitschko said 80% of consumers in the city of 3 million people were left without water supplies because of the damage to a power facility.

Local authorities were working on restoring the supplies as soon as possible, Klitschko said, telling Kyiv residents in the meantime to “stock up on water from the nearest pump rooms and points of sale.”

Andriy Yermak, the head of the office of President Volodymyr Zelenskyy, vowed that the attacks on civilian facilities would not weaken Ukraine’s resistance.

“We will persevere, and generations of Russians will pay a high price for their disgrace,” Yermak said.

The attacks occurred just before Czech Prime Minister Petr Fiala and many top members of his government, including the foreign, defense and interior ministers, arrived in Kyiv in the latest show of support from European leaders for Ukraine.

“The Ukrainians are fighting not only for their country but also for the whole of Europe. Our support must continue,” Fiala tweeted from Kyiv.

Smoke was seen rising from the left bank of the Dnieper River in Kyiv, either from a missile strike or where it was shot down by Ukrainian forces.

Associated Press reporters saw soldiers inspecting a crater and debris from where one of the missiles landed on the outskirts of Kyiv. The missiles flew fast and low to the ground and sounded like bombs exploding, according to locals who saw the missiles.

“It was scary, actually,” said Oleksandr Ryabtsev, 28, who was on his way to work. “I raised my head and it was flying there, you could see this cruise missile, I didn’t even go to work, I went home.”

Prime Minister Shmyhal said that in the Kyiv, Zaporizhzhia, Dnipropetrovsk and Kharkiv regions, emergency power shutdowns were underway. “Today, just like in previous weeks, it is important that Ukrainians consume energy mindfully and reduce the load on the grid,” the official said.

In the eastern city of Kharkiv, two strikes hit critical infrastructure facilities, according to authorities, and the subway ceased operating.

Critical infrastructure sites were also hit in the Cherkasy region southeast of Kyiv. In the Kirovohrad region of central Ukraine, the energy facility was hit, according to local authorities. In Vinnytsia, a missile that was shot down landed on civilian buildings, resulting in damage but no casualties, according to regional Gov. Serhii Borzov.

Some parts of Ukrainian railways were also cut off from power, the Ukrainian Railways reported.

The attack comes two days after Russia accused Ukraine of a drone attack against Russia’s Black Sea Fleet off the coast of the annexed Crimean Peninsula. Ukraine has denied the attack, saying that Russia mishandled its own weapons, but Moscow still announced halting its participation in a U.N. and Turkey-brokered deal to allow safe passage of ships carrying grain from Ukraine.

Turkish President Recep Tayyip Erdogan said his country was determined to press forward with the grain deal, which has allowed more than 9 million tons of grain to be exported from Ukraine.

Turkish Defense Minister Hulusi Akar said he would speak by phone with Russian counterpart Sergei Shoigu later Monday to ensure the deal remains in effect.

“The suspension of the agreement affects all humanity. We remind the parties concerned to reconsider their decisions,” Akar said. “Those in need were already urgently awaiting the grains. The situation will only get worse.”

It’s the second time this month that Russia unleashed a massive barrage of strikes on Ukrainian infrastructure. On Oct. 10, a similar attack rocked the war-torn country following an explosion on the Kerch Bridge linking annexed Crimea to mainland Russia — an incident Moscow blamed on Kyiv.

Ukrainian Foreign Minister Dmytro Kuleba said there was no justification for Russia launching missiles meant to inflict so much suffering on civilians.

“Don’t justify these attacks by calling them a ‘response.’ Russia does this because it still has the missiles and the will to kill Ukrainians,” he tweeted.

One of the Russian missiles shot down by Ukraine landed on a Moldovan border city, causing material damage but no casualties.

Photos released by Moldova’s interior ministry showed a thick plume of smoke rising over the northern city of Naslavcea, on the border with Ukraine, as well as broken windows on several houses in the area.

(AP)