Belarus president jokes with Putin, says Wagner fighters "stress" him as they want to go to Poland 

Deadly Russian shelling continued overnight, striking targets in Ukraine's Kharkiv and Zaporizhzhia regions.

At least two people were killed in northeastern Kharkiv, according to regional leaders. Two others were wounded, including a 60-year-old man and 72-year-old woman.

“Over the past day, the enemy has been massively shelling settlements in Kharkiv, Chuhuiv, Kupyansk and Izium districts with artillery, mortars and aircraft,” Oleh Syniehubov, head of Kharkiv regional military administration, said on Telegram.

The enemy has not made progress around the city of Kupyansk, where Russia has amassed thousands of troops in recent days, Syniehubov claimed. "Our defenders are holding their positions," he said.

In southern Ukraine: Elsewhere, Russian forces rained down dozens of attacks on about 20 different civilian settlements in Ukraine’s Zaporizhzhia region overnight into Sunday, the head of the Zaporizhzhia region military administration, Yurii Malashko, said in a statement.

Russian troops also attacked the outskirts of Zaporizhzhia city and the district with four missiles overnight, causing no casualties, according to Malashko.

Zaporizhzhia is a key southern front in Ukraine's counteroffensive. Kyiv's forces are attempting to punch through the Russian line, drive south and split the land route connecting Russian-annexed Crimea to eastern Ukraine. But they are doing so under heavy shelling and multi-layered Russian defenses.