Russia's Putin says Ukraine's future in doubt as cease-fires collapse

He hit out at Western sanctions that have crippled Russia's economy and sent the value of its currency tumbling.

Russian President Vladimir Putin warned Saturday that Ukrainian statehood is in jeopardy and likened the West's sanctions on Russia to 'declaring war,' while a promised cease-fire in the besieged port city of Mariupol collapsed amid scenes of terror.

With the Kremlin’s rhetoric growing fiercer and a reprieve from fighting dissolving, Russian troops continued to shell encircled cities and the number of Ukrainians forced from their country grew to 1.4 million. By Saturday night Russian forces had intensified their shelling of Mariupol, while dropping powerful bombs on residential areas of Chernihiv, a city north of Kyiv, Ukrainian officials said.

Bereft mothers mourned slain children, wounded soldiers were fitted with tourniquets and doctors worked by the light of their cellphones as bleakness and desperation pervaded. Putin continued to pin the blame for all of it squarely on the Ukrainian leadership and slammed their resistance to the attack.

“If they continue to do what they are doing, they are calling into question the future of Ukrainian statehood,” he said. “And if this happens, it will be entirely on their conscience.”

He also hit out at Western sanctions that have crippled Russia's economy and sent the value of its currency tumbling.

“These sanctions that are being imposed, they are akin to declaring war,” he said during a televised meeting with flight attendants from Russian airline Aeroflot. “But thank God, we haven’t got there yet.”

Russia's financial system suffered yet another blow as Mastercard and Visa announced they were suspending operations in the country.

Ten days after Russian forces attacked, the struggle to enforce the temporary cease-fires in Mariupol and the eastern city of Volnovakha showed the fragility of efforts to stop the fighting across Ukraine.

Ukrainian officials said Russian artillery fire and airstrikes had prevented residents from leaving before the agreed-to evacuations got underway. Putin accused Ukraine of sabotaging the effort.

A third round of talks between Russia and Ukraine will take place Monday, according to Davyd Arakhamia, a member of the Ukrainian delegation. He gave no additional details, including where they would take place.

Previous meetings were held in Belarus and led to the failed cease-fire agreement to create humanitarian corridors for the evacuation of children, women and older people from besieged cities, where pharmacies have run bare, hundreds of thousands face food and water shortages, and the injured have been succumbing to their wounds.

In comments carried on Ukrainian television, Mariupol Mayor Vadym Boychenko said thousands of residents had gathered for safe passage out of the city of 430,000 when shelling began and the evacuation was stopped. Later in the day, he said the attack had escalated further.

“The city is in a very, very difficult state of siege,” Boychenko told Ukrainian TV. “Relentless shelling of residential blocks is ongoing, airplanes have been dropping bombs on residential areas. The Russian occupants are using heavy artillery, including Grad multiple rocket launchers.”

Russia has made significant advances in the south, seeking to cut off Ukraine’s access to the sea. Capturing Mariupol could allow Russia to establish a land corridor to Crimea, which it annexed in 2014.

Meanwhile the head of the Chernihiv region said Russia has dropped powerful bombs on residential areas of the city of the same name, which has a population of 290,000. Vyacheslav Chaus posted a photo online of what he said was an undetonated FAB-500, a 500-kilogram bomb.

The West has broadly backed Ukraine, offering aid and weapons and slapping Russia with vast sanctions. But the fight itself has been left to Ukrainians, who have expressed a mixture of courageous resolve and despondency.

“Ukraine is bleeding,” Foreign Minister Dmytro Kuleba said in a video released Saturday, “but Ukraine has not fallen.”

Russian troops advanced on a third nuclear power plant, having already taken control of one of the four operating in the country and the closed plant in Chernobyl, Zelenskyy told US lawmakers.