Zelensky says next few days of war are crucial as Ukraine braces for new Russian offensive

UkrainianPresident Volodymyr Zelensky warned his nation Sunday night that the coming week would be as crucial as any in the war, adding in his nightly address that he expects Russian troops to "move to even larger operations in the east of our state."

Experts saythe next phase of the battle may begin with a full-scale offensive that could start within days. The outcome could determine the course of the conflict, which has flattened cities, killed untold thousands and isolated Moscow economically and politically.

Russia'smilitary is believed to be preparingfor a large, focused push to expand control in the country's east. Russia-backed separatists have fought Ukrainian forces in the eastern Donbas region since 2014 and declared some territory there as independent.

Zelensky accused Russia of trying to evade responsibility for war crimes. "The day will come when they will have to admit everything. Accept the truth," he said.

"When people lack the courage to admit their mistakes, apologize, adapt to reality and learn, they turn into monsters. And when the world ignores it, the monsters decide that it is the world that has to adapt to them. Ukraine will stop all this."

Questions remain about the ability of Russia's depleted and demoralized forces to conquer much ground after their advance on the capital, Kyiv, was repelled by determined Ukrainian defenders.

Britain's Defence Ministry reported Sunday that Russian forces were trying to compensate for mounting casualties by recalling veterans discharged in the past decade.

However, Western military analysts say Russia's assault was increasingly focusing on a sickle-shaped arc of Eastern Ukraine from Kharkiv, Ukraine's second-largest city,in the north to Kherson in the south.

The narrower effort could alleviate the Russian problem, earlier in the war, of spreading their offensive too widely over too great a geographic area.

Bombardment continues

On Sunday, Russian forces shelled government-controlled Kharkiv and sent reinforcements toward Izyum to the southeast in a bid to break Ukraine's defences, the Ukrainian military command said.

The Russians also kept up their siege of Mariupol, a key southern port city that has been under attack and surrounded for nearly 1months.

Russian forces destroyed an airport and wounded at least five people as they fired missiles on Sunday at Ukraine's fourth-largest city, Dnipro, a Ukrainian officialsaid.

Valentyn Reznichenko, governor of the central Dnipropetrovskregion that includes Dnipro,said theairport was hit twice.

The Russian Defence Ministry said its air-launched missiles hit Ukraine's S-300 air defence missile systems in two locations, while sea-launched cruise missiles destroyed a Ukrainian unit's headquarters in the Dnipro region.

Neither side's military claims could be independently verified.

WATCH | Ukrainian MP describes visits to Bucha and Borodyanka, where civilian killings occurred.Warning: This video contains graphic images:

Ukrainian MP recounts visits to towns where civilian killings occurred

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Duration 7:39

WARNING: This video contains graphic details of violence and sexual assault and may affect those who have experienced sexual violence or know someone affected by it. Ukrainian MP Kira Rudik describes her visits to Bucha and Borodyanka, towns that were recently occupied by Russian forces and where civilian killings occurred.

New details on war crimes investigations

Ukraine's prosecutor general on Sunday saidher team has documented 5,600 cases of war crimes perpetrated by the Russian government and its leading figures since the invasion began Feb. 24.

Speaking to British broadcaster Sky News, Iryna Venediktova said Ukraine has identified 500 suspects,including "top" Russian military personnel, politicians and "propaganda agents."

She added that Russian President Vladimir Putin was a "main war criminal of the 21st century,"but in accordance with international law, as long as the Russian president is in power, he enjoys diplomatic immunity and cannot be prosecutedunless the initiative is taken by the International Criminal Court.

The prosecutor general's office is investigating several mass casualties involving civilians as possible war crimes.

Venediktova said on Saturday that the European Union was involved in the investigation.

Also talking to Sky News, Pascal Hundt, the head of the International Committee of the Red Cross delegation to Ukraine, said an aid convoy had made multiple unsuccessful attempts to reach the besieged city of Mariupol, where fierce fighting is ongoing.

Hundt described the security situation in Mariupol as "dangerous,"with humanitarian workers having to pass through multiple checkpoints to reach the city and without guarantees of their safety.

WATCH | Ukrainian village of Andriivka scarred by war. Warning: This video contains graphic images:

Ukrainian village of Andriivka grapples with its trauma

2 years ago

Duration 3:03

WARNING: This video contains graphic content. Like many in newly liberated areas near Kyiv, people in the village of Andriivka are just starting to process their traumatic experiences while living under Russian occupation.

Venediktovacalled themissile strike at a train station in Kramatorsk, in Eastern Ukraine,on Friday "absolutely" a war crime. The strike killed at least 52 people and wounded more than 100 others as civilians were evacuating the city in the Donetsk region.

Russia denied responsibility and accused Ukraine's military of firing on the station to turn blame for civilian casualties on Moscow. A Russian Defence Ministry spokespersondetailed the missile's trajectory and Ukrainian troop positions to bolster the argument.

Meanwhile, the RCMPon Sunday released more details about theirnationalinvestigation into the allegations of war crimes and crimes against humanity in Ukraine, which itannounced on Thursday.

In a tweet, the Mountiessaid information providedto theirinvestigation"will be protected, and only used for the investigation and future prosecutions. It will not impact your immigration status."

On Thursday, theRCMP said they would becollecting information and evidencefromUkrainians entering Canada who wish to provide it, with the hopes of using the information in future criminal investigations, according to a statement from the partners of Canada's War Crimes Program.

Ukraine detains men trying to leavecountry

Ukraine's border guard agency says that about 2,200 Ukrainian men of fighting age have been detained so far while trying to leave the country, in violation of martial law.

The agency said Sunday that some of them have used forged documents and others tried to bribe border guards to get out of the country.

It said some have been found dead while trying to cross the Carpathian mountains in adverse weather, without specifying the number.

Under martial law, Ukrainian men between the ages of 18 and 60 are barred from leaving the country so that they can be called up to fight.

Aggression notlimited to Ukraine, Zelensky says

Zelenskysaid late Saturday that democratic countries are united in working to stop the Russian invasion, as civilians continued to flee eastern parts of the country before an expected onslaught.

In his daily late-night video address to Ukrainians, Zelenskysaid that"Russian aggression was not intended to be limited to Ukraine alone" and that the "entire European project is a target for Russia."

Several European leaders have made efforts to show solidarity with the battle-scarred nation. Zelenskythanked the leaders of Britain and Austria for their visits on Saturday to Kyiv, Ukraine's capital, and pledges of further support.

British Prime Minister Boris Johnson's visit came a day after the U.K. pledged an additional $163million Cdnin high-grade military equipment. Johnson also confirmed further economic support, guaranteeing an additional $628.3million in World Bank lending to Ukraine, taking Britain's total loan guarantee to up to $1.25 billion.

Zelenskyalso thanked the European Commission president and Canadian Prime Minister Justin Trudeaufor a global fundraising event that brought in more than $13.6 billionCdnfor Ukrainians who have fled their homes.

The Ukrainian leaderrepeated his call for a complete embargo on Russian oil and gas, which he called the sources of Russia's "self-confidence and impunity."

"Freedom does not have time to wait," Zelenskysaid. "When tyranny begins its aggression against everything that keeps the peace in Europe, action must be taken immediately."

More than six weeks after the invasion began, Russia has pulled its troops from the northern part of the country, around Kyiv, and refocused on the Donbas in the east, a largely Russian-speaking and industrial region.

Satellite image shows convoy in Eastern Ukraine

Western military analysts said an arc of territory in Eastern Ukraine was under assault, from Kharkiv in the north to Kherson in the south.

Newly released Maxar Technologies satellite imagery collected on Friday showed a 13-kilometreconvoy of military vehicles headed south to the Donbas through the town of Velykyi Burluk, about 90 kilometres east of Kharkiv, Ukraine's second-largest city.

New top general appointed, says U.S. official

Russia has appointed a new Ukraine war commander as the country gears up for a more focused offensive in the Donbas, a U.S. official said Sunday.

Moscow has turned to Gen. Alexander Dvornikov, 60, one of Russia's most experienced military officers and according to U.S. officials a general with a record of brutality against civilians in Syria and other war theatres.

The senior official who identified the new commander was not authorized to be identified and spoke on condition of anonymity.

Despite thedecision to establish new battlefield leadership,Western assessments have expressed confidence in the ability of Ukraine's defenders to repel Russian assaults, portraying Russia's troops as suffering from low morale and mounting casualties.

Britain's Defence Ministry said Sunday that the Russian military was seeking to respond to mounting losses by boosting troop numbers with personnel who have been discharged from military service since 2012.

U.K. speculates on pulling in Moldova separatists

In an update on Twitter, Britain's Defence Ministry also said that the Russian military's efforts to "generate more fighting power" also include trying to recruit from Trans-Dniester, a breakaway region in Moldova that borders Ukraine.

Russia-backed separatists in eastern Moldova took up arms in 1992 to establish Trans-Dniester, which is not internationally recognized and where Russia maintains some 1,500 troops.

Ukrainian authorities have called on civilians in Eastern Ukraineto get out ahead of an imminent, stepped-up offensive by Russian forces.

With trains not running out of Kramatorsk on Saturday, panicked residents boarded buses or looked for other ways to leave, fearing the kind of unrelenting assaults and occupations by Russian invaders that brought food shortages, demolished buildings and death to other cities.

Ukraine's state railway company said residents of Kramatorsk and other parts of the Donbas could flee through other train stations.