Ukrainian President Volodymyr Zelenskiy says he has had a long and "substantive" phone call with US President Donald Trump's special envoy Steve Witkoff and Trump's son-in-law Jared Kushner.
"Ukraine is determined to keep working in good faith with the American side to genuinely achieve peace. We agreed on the next steps and formats for talks with the United States," Zelenskiy said on X.
Witkoff and Kushner had held two days of talks with Ukraine's senior negotiator Rustem Umerov in Miami this week, which both sides called "constructive discussions on advancing a credible pathway toward a durable and just peace in Ukraine".
Witkoff had been expected to brief Umerov on his meeting in Moscow this week with Russian President Vladimir Putin.
Zelenskiy said he was waiting for Umerov to give him a detailed report in person in Kyiv.
"Not everything can be discussed over the phone, so we need to work closely with our teams on ideas and proposals," Zelenskiy said.
"Our approach is that everything must be workable – every crucial measure for peace, security, and reconstruction."
French President Emmanuel Macron said earlier on Saturday that he would travel to London on Monday to meet Zelenskiy as well as the UK and German leaders to discuss ongoing negotiations under US mediation.
"Ukraine can count on our unwavering support. That is the whole point of the efforts we have undertaken as part of the Coalition of the Willing," Macron said on X.
"We will continue these efforts alongside the Americans to provide Ukraine with security guarantees, without which there can be no robust and lasting peace. For what is at stake in Ukraine is also the security of Europe as a whole," he added.
Macron also condemned "in the strongest possible terms" the strikes that targeted Ukraine on Friday night, in particular its energy and rail infrastructure.
"Russia is locked into an escalatory approach and is not seeking peace ... We must continue to put pressure on Russia to force it to make peace," he added.
Widespread military activities affected Ukraine's electricity grid and prompted operating nuclear power plants to reduce output, the International Atomic Energy Agency said on Saturday.
Ukraine's Zaporizhzhia nuclear power plant temporarily lost all off-site power overnight, the IAEA said, citing its Director General Rafael Mariano Grossi.
Ukraine's air force said Russia used 653 drones and 51 missiles in the wide-reaching overnight attack, which triggered air raid alerts across the country and came as Ukraine marked Armed Forces Day.
Ukrainian forces shot down and neutralised 585 drones and 30 missiles, the air force said, adding that 29 locations were struck.
At least eight people were wounded in the attacks, Ukrainian Minister of Internal Affairs Ihor Klymenko said.
Among these, at least three people were wounded in the Kyiv region, according to local officials.
Drone sightings were reported as far west as Ukraine’s Lviv region.
The Ukrainian military said on Saturday that it conducted a new strike on Russia's oil industry, targeting a refinery in Ryazan, about 200km southeast of Moscow.
A hit on a facility had been detected, the Ukrainian General Staff said on social media, adding that the refinery supplies the Russian armed forces.
The governor of the Ryazan region Pavel Malkov said on Telegram that debris had fallen on the grounds of an industrial plant and that there were no casualties or major damage.
with AP and DPA
