Officials from Russia and Ukraine have ended peace talks and will return to their respective capital cities for further consultations before a second round of talks, Ukrainian presidential adviser Mykhailo Podolyak has said.
"The delegations are returning to their capitals for consultations and have discussed the possibility of meeting for a second round of negotiations soon," Mr Podolyak said.
Officials met today to discuss a ceasefire, while invading Russian forces encountered resistance from Ukrainian troops and civilians on a fifth day of conflict.
Mr Podolyak said on Twitter that negotiations were difficult.
"The Russian side, unfortunately, still has a very biased view of the destructive processes it has launched," he said.
Shortly before the talks broke up, Russian President Vladimir Putin laid out his prerequisites for ending the war in a phone call with French President Emmanuel Macron.
"Putin stressed that a settlement is possible only if Russia's legitimate security interests are unconditionally taken into account, including the recognition of Russian sovereignty over Crimea, the demilitarisation and denazification of the Ukrainian state and ensuring its neutral status," the Kremlin said.
Russia faced deepening isolation and economic turmoil as Western nations, united in condemnation of its assault, hit it with an array of sanctions that created ripple effects around the world.
However, Mr Putin did not appear ready to reconsider the invasion, dismissing the West as an "Empire of Lies" and putting his nuclear-armed units on high alert.
The talks between the two sides were aimed at securing an immediate ceasefire and the withdrawal of Russian forces, the Ukrainian president's office said. The Kremlin has declined to comment on Moscow's goals.
They were being held on the border with strong Russian ally Belarus - a launch pad for the invading Russian troops.
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Meanwhile, the 193-member United Nations General Assembly began meeting on the crisis in Ukraine ahead of a vote this week to isolate Russia by deploring its "aggression against Ukraine" and demanding Russian troops stop fighting and withdraw.
The General Assembly will vote this week on a draft resolution similar to a text vetoed by Russia in the 15-member Security Council on Friday.
No country has a veto in the General Assembly and Western diplomats expect the resolution, which needs two-thirds support, to be adopted.
While General Assembly resolutions are non-binding, they carry political weight.
The United States and allies see action at the United Nations as a chance to show that Russia is isolated because of its invasion of Ukraine.
The draft resolution already has at least 80 co-sponsors, diplomats have said. More than 100 countries are due to speak before the General Assembly votes.
Zelensky signs request for Ukraine to join EU
Ukrainian President Volodymyr Zelensky said he had signed an official request for Ukraine to join the European Union.
Mr Zelensky has asked the European Union to allow Ukraine to gain membership immediately under a special procedure.
In the northeastern city of Kharkiv, Ukraine's second largest, Russian forces fired on residential areas, killing dozens and wounding hundreds of people, the Ukraine military said.
Video footage posted by the military showed thick plumes of smoke rising from apartment blocks and flashes of flames, apparently from missiles impacting. Reuters could not independently confirm the accounts.
Ukrainian Defence Minister Oleksii Reznikov appealed directly to Russian soldiers fighting in Ukraine, saying they would receive full amnesty and monetary compensation if they voluntarily laid down their weapons.
"Those of you who do not want to become a murderer and die can save yourselves," he said in a post on social media.
destroyed Russian infantry vehicle after the fight in Kharkiv yesterday
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Ukrainian military says Sunday was difficult for its forces
The Ukrainian military said Russian forces were focusing on Chernihiv city, northeast of Kyiv, and parts of Donetsk region in the east. Separatists raised a Russian flag on a local administration building in one shattered village on Sunday, Reuters footage showed.
Russia said its forces had taken over the towns of Berdyansk and Enerhodar in Ukraine's southeastern Zaporizhzhya region as well as the area around the Zaporizhzhya nuclear power plant, Interfax reported. The plant's operations continued normally, it said.
Ukraine denied the nuclear plant had fallen into Russian hands, Interfax said.
UN human rights chief Michelle Bachelet said at least 102 civilians in Ukraine have been killed since Thursday, with a further 304 wounded, but the real figure is feared to be "considerably higher".
More than half a million people have fled to neighbouring countries, according to the United Nations refugee agency.
Protests
Protests have been held around the world against the invasion, including in Russia, where almost 6,000 people have been detained at anti-war demonstrations since Thursday, the OVD-Info protest monitor said.
The UN Human Rights Council agreed today to hold a debate on Thursday on the invasion, after Kyiv's ambassador told the Geneva forum that some of Moscow's military actions "may amount to war crimes".
Mr Zelenskiy has asked the European Union to allow Ukraine to gain membership immediately.
The EU shut all Russian planes out of its airspace, as did Canada, forcing Russian airline Aeroflot to cancel all flights to European destinations until further notice.
Ukraine's Foreign Minister Dmytro Kuleba urged the Russian people to demand Mr Putin stop the war.
"Look what Vladimir Putin turned your country, your great country, into," he said in a video.
"He declared an invasive war against Ukraine, he sent your sons, husbands here to kill Ukrainians, capture our lands, destroy our cities.
"Ukrainians did not want this war, but they will fight for their land."
