Moscow, Russia - Russian President Vladimir Putin on Saturday began talks with US envoys Jared Kushner and Steve Witkoff on ending more than four years of war in Ukraine ahead of their first visit to Kyiv expected on Sunday.

Both Russia and Ukraine vowed not to strike each other's capitals for three days during the negotiations, as Washington tries to revive US-led talks to end Europe's worst conflict since World War II.

President Donald Trump earlier said his son-in-law Kushner and business ally Witkoff were bringing "a proposal to end the war".

"Dear colleagues, I warmly welcome you to Moscow. The situation is, of course, not simple," Putin told the envoys in a grand Kremlin hall in footage aired by Russian TV.

Iran War US hits Iran's shadow oil network: "Completely destroyed"

"But before we begin to address it, I would like to ask everyone to convey their best wishes and words of gratitude to US President Mr. Trump," Putin said.

The talks come as the grinding war saw increasing civilian deaths and attacks this summer. Putin has repeatedly said Moscow intends to seize the rest of eastern Ukraine.

The war, launched by Russia in 2022, has killed hundreds of thousands and displaced millions.

Russian strikes on Ukraine Saturday killed at least seven people, including in the Kyiv suburbs, Ukrainian officials said.

The Kremlin said it would not strike Kyiv from midnight Saturday, while Ukrainian President Volodymyr Zelensky said he would halt strikes on Moscow "from now" until Monday.

"The Russian president, the commander-in-chief, has given the order from midnight tonight not to strike Kyiv for three days," Kremlin spokesman Dmitry Peskov said.

Zelensky – who had offered a truce during the US visits – later said he had spoken to the US envoys and also promised Kyiv would not strike Moscow.

"From now through the end of Saturday, as well as on Sunday and Monday, Ukraine is ready to refrain from strikes on Moscow," Zelensky said on social media.