Ukrainian President Volodymyr Zelensky has said that Kyiv will lose the war against Russia if the US Congress does not approve military aid to battle Moscow's invasion.
Republicans in Congress have been blocking tens of billions of dollars in military assistance for Kyiv for months.
"It is necessary to specifically tell Congress that if Congress does not help Ukraine, Ukraine will lose the war," Mr Zelensky said during a video meeting of Kyiv-organised fundraising platform United24.
Mr Zelensky said it would be "difficult" for Ukraine to "stay" (survive) without the aid.
He said that "if Ukraine loses the war, other states will be attacked."
Russia's nuclear power corporation Rosatom, meanwhile, accused Ukraine's military of launching a series of attacks on the Russian-held Zaporizhzhianuclear power station, and the UN's nuclear watchdog called for such incidents to cease immediately.
Rosatom said three people were hurt, one seriously.
Russia urged world leaders to denounce the incidents.
Both Russian officials and the UN's International Atomic Energy Agency said radiation levels were normal and damage not severe.
A Ukrainian intelligence official said Kyiv had nothing to do with any strikes on the station, the largest in Europe, and suggested they were the work of Russians themselves.
Earlier, three civilians were killed in a Russian attack on the frontline village of Guliaipole in Ukraine's southeastern Zaporizhzhia region, according to the local governor.
"Two men and a woman died under the rubble of their own house, which was hit by a Russian shell," Ivan Fedorov said on the Telegram messaging app.
Mr Fedorov said one more person was injured.
He said Russians shelled the village with a Grad self-propelled multiple rocket launcher this morning.
Reuters could not independently verify the report.
The frontline Zaporizhzhia region is under constant Russian bombardment by rockets, drones and cannons.
Officials said another civilian, a woman, was killed in the city of Kupiansk, in the northeastern Kharkiv region that has seen increased attacks in recent months.
"A woman died under the rubble in an apartment on the fourth floor of a high-rise building," Ukraine's state emergency services said, adding that it was a residential building.
It comes as Ukraine's forces destroyed all 17 attack drones launched by Russia overnight, the Ukrainian military said today.
"At night the Russian occupiers attacked Ukraine once again, using 17 attack drones. The Ukrainian air defence forces destroyed all of them," the Ukrainian General Staff said on Facebook.
Situation 'difficult' around Chasiv Yar - Ukraine
Meanwhile, the situation around eastern Ukraine's frontline city of Chasiv Yar is "difficult and tense", the army said today, adding that Russian forces were now "in retreat".
Russian forces have unleashed "constant fire" in the area in recent days seeking to seize the city's dominant heights.
Chasiv Yar lies less than 30km southeast of the regional town of Kramatorsk, an important rail and logistics hub for Ukraine's army.
"The situation is difficult enough and tense," said Oleg Kalashnikov, spokesman for an army brigade deployed in the area.
"The Russian are trying to carry out assaults directly on the small towns of Bogdanivka and Ivanivske, outside Chasiv Yar," Mr Kalashnikov told Ukrainian television.
"They are also trying to carry out offensive actions between the two places," he added.
The Russian army was "using infantry backed by armoured fighting vehicles", and "warplanes".
"But all their attacks have been repelled. They are in retreat," the spokesman said.
On Friday, Russian occupying authorities said Russia's troops were advancing towards Chasiv Yar in the eastern Donetsk region.
Both Ukrainian and Russian military bloggers with links to the armed forces said Russian troops had reached the outskirts of the town.
Mr Kalashnikov today stressed the strategic importance of Chasiv Yar, 20km west of Bakhmut, which was flattened by months of artillery fire before it was captured by Russia last May.
Russia has recently secured its first territorial gains since seizing Bakhmut and is now trying to press onwards against Ukrainian units hobbled by delays in the supply of vital Western military aid.
If Russia takes the devastated town of Chasiv Yar, where 770 people remain out of a pre-invasion population of 13,000, it "will be able to bombard Kostiantynivka", 10km to the southwest, Kalashnikov warned.
"The enemy will also be able to threaten logistics routes (between Kostiantynivka, Slovyansk and Kramatorsk)," he said, adding that the last two places could also come under direct attack.
