Ukraine has held "substantive" talks with US President Donald Trump's son-in-law Jared Kushner and envoy Steve Witkoff, with discussions expected to continue in Davos next week, Ukraine's security chief said.
"We had substantive discussions on economic development and prosperity plan as well as security guarantees for Ukraine," security chief Rustem Umerov said on social media.
More talks will be held at this week's Davos Economic Forum, he added.
It comes after over 200,000 consumers in the Russian-held part of Ukraine's Zaporizhzhia region were left without electricity, the Moscow-installed regional governor said, after a Ukrainian drone strike yesterday.
In a statement posted on Telegram, Yevgeny Balitsky said that work was ongoing to restore the power supply, but that almost 400 settlements remain without electricity.
Temperatures are well below freezing throughout the southeastern Zaporizhzhia region, around 75% of which is controlled by Russia.
Russia has frequently bombarded Ukraine's power infrastructure throughout its nearly four-year war, causing rolling daily blackouts, and has also targeted heating systems this winter.
Separately, the governor of the Russian border region of Belgorod, which has come under regular Ukrainian attack since 2022, said that one person had been killed and another wounded by a drone strike on the border village of Nechaevka.
Further south, in the Caucasus mountains region of North Ossetia, two children and one adult were injured when a Ukrainian drone struck a residential building in the town of Beslan, the region's governor said.
Two people were killed and dozens more wounded in a mass Russian drone attack across Ukraine overnight, President Volodymyr Zelensky said, as US and Ukrainian negotiators hashed out a post-war plan in the latest round of peace talks.
Mr Zelensky said the Sumy, Kharkiv, Dnipro, Zaporizhzhia, Khmelnytskyi and Odesa regions were targeted in an attack that included more than 200 drones.
The military said 30 strikes had been recorded across 15 locations.
One person was killed in the second-largest city of Kharkiv, said mayor Ihor Terekhov, who in recent days has reported significant damage to local energy facilities as a result of Russian strikes.
It was not immediately clear where the second person had died.
Mr Zelensky said he had ordered imports of electricity and additional power equipment to be accelerated as much as possible.
Russia's latest mass attack comes as US and Ukrainian officials meet in Miami to discuss security guarantees and a post-war recovery package for Ukraine.
The US has pushed Ukraine to agree to a peace framework that it will then present to Russia, which has been cool on the diplomatic push and has demanded major Ukrainian concessions.
