On that occasion, the president of Ukraine filmed himself and posted that video on social networks.

"Today - the Kupyan direction and our soldiers who are achieving results for Ukraine here. Many Russians spoke about Kupyansk - we can see that. I was there, I congratulated the guys. Thank you to every unit, to everyone who is fighting here, to everyone who destroys the occupier," said Zelensky.

He also pointed out that it is extremely important to achieve results on the front so that Ukraine can achieve results in diplomacy.

"That's how it works: all our strong positions inside the country - strong positions in the conversation about ending the war. Thank you to every soldier! I'm proud of you! Thank you to all our Ground Forces - today is exclusively your day. Thank you, guys," Zelensky said.