Ukrainian President Volodymyr Zelensky has called on the West to rapidly deliver more air-defence systems as a wave of Russian missile, drone and artillery strikes killed at least 13 people.
In the southern port city of Odesa on the Black Sea, two more bodies - a woman and her eight-month-old baby - were found following a Russian drone strike overnight between Friday and yesterday.
A seven-month-old baby and a two-year-old child were among the previously reported eight victims, bringing the death toll in Odesa to 10.
Separate shelling attacks on the frontline regions of Kharkiv in the northeast and Kherson and Zaporizhzhia in the south killed another three people, Ukrainian officials said.
"Russia continues to hit civilians," Mr Zelensky said in a post on social media.
"We need more air defences from our partners. We need to strengthen the Ukrainian air shield to add more protection for our people from Russian terror. More air-defence systems and more missiles for air-defence systems save lives."
Ukraine is currently on the back foot in the two-year war as a crucial $60bn aid package is held up in the United States Congress.
In Odesa, "a nine-storey building was destroyed as a result of an attack by Russian terrorists", Interior Minister Igor Klymenko said in a Telegram post yesterday.
Around 10 people were still unaccounted for, with almost 100 rescuers set to continue a search and rescue operation overnight.
Footage from the scene showed several floors of a residential building collapsed and its facade ripped off.
Ukraine's air force said falling debris from Russian drones it had shot down fell onto residential buildings in both Odesa and Kharkiv.
'Difficult situation'
The attacks came as Russia sought to press its advantage on the battlefield.
Kyiv has acknowledged that it is heavily outgunned and outnumbered, facing ammunition shortages and aid delays.
Half of all promised Western ammunition arrives late, the defence minister has said.
Russian forces have advanced westwards following last month's capture of the key eastern town of Avdiivka, seizing several small villages in recent days.
Visiting frontline military posts yesterday, Ukraine's new Commander-in-Chief Oleksandr Syrsky said "the situation at the front remains difficult, but controlled".
Kyiv appeared to have launched its own overnight drone attack, with the Russian defence ministry claiming early today to have shot down 38 drones over the occupied territory of Crimea.
An apparent Ukrainian drone also damaged a residential building a day earlier in Saint Petersburg, Russia's second-largest city.
Videos on Russian social media showed what appeared to be a drone spiralling downwards into the building, triggering an explosion that blew out windows and caused small fires.
The city's National Guard division said its preliminary assumption was that the damage was caused by a "falling drone".
Ukrainian media reported that the drone was shot down by Russia's air defences while targeting an oil depot around a kilometre from the crash site.
Kyiv has hit several Russian oil facilities in recent months in what it has called fair retribution for Moscow's attacks on Ukraine's power grid.
Russia's Investigative Committee said separately that four of its officials had been wounded when a Ukrainian drone dropped explosives over the Bryansk border region.
Russia also expressed outrage at a leak of confidential German army talks in which officers allegedly discussed missile strikes on the annexed Crimean peninsula.
German Chancellor Olaf Scholz yesterday promised a full investigation after the head of Russia's state-run RT outlet posted the alleged leaked recording on social media.
A spokeswoman for the German defence ministry confirmed yesterday that a secret air force conversation had been tapped, but that they could not say for certain whether any changes had been made to the conversation in the leaked audio file.
Russia's foreign ministry demanded a "prompt" explanation from Berlin, while Moscow's top diplomat Sergei Lavrov said it showed Ukraine's European backers were intent on inflicting a "strategic defeat" on Russia on the battlefield.
Turkey hopes Ukraine ceasefire talks can start soon
Turkey hopes talks for a ceasefire in Ukraine will start soon, Foreign Minister Hakan Fidan has said today, at the end of a diplomatic forum in the southern city of Antalya.
Mr Fidan met his Russian counterpart, Sergei Lavrov, on Friday on the sidelines of the Antalya Diplomacy Forum. He told reporters he had discussed a number of issues with Lavrov, including Ukraine.
"On the issue of Ukraine, our view is that both sides have reached the limits of what they can get by war. We think that it is time to start a dialogue for a ceasefire," Mr Fidan said.
"That doesn't mean recognising the occupation (by Russia),but issues of sovereignty and ceasefire should be discussed separately."
NATO member Turkey, which shares a maritime border with both Ukraine and Russia in the Black Sea, has sought to maintain good ties with both nations since Russia's invasion of Ukraine two years ago.
Ankara has provided military support for Ukraine and voiced support for its territorial integrity, but also opposes sanctions on Russia.
"The death and injury of more than 500,000 people and the complete destruction of the infrastructure and superstructure of an entire country is not a reality that is bearable for us," Mr Fidan said.
"This has to stop somehow. To stop this, there should be some discussions and everybody should get used to this idea."
