Volodymyr Zelensky has addressed third-level students at 20 locations across Ireland via video link, advising them to “take care of your freedom”.

In his address, the Ukrainian president said that the list of sanctions against 52 Irish politicians “don’t really affect anything, it’s more of a propaganda thing”.

He also said that he was grateful to Ireland for its “incredible warmth” in taking in 63,000 Ukrainian refugees since the invasion began, with hundreds of young students attending schools and 500 students attending universities.

He said: “I can tell you, select any time and you know that you and your government and your society have helped Ukraine in many ways. And as you mentioned that no matter your neutral status, you’re absolutely not neutral in your attitude, in your assistance.

“Take care of your freedom. And glory to Ukraine.”

Hundreds of students gathered in an auditorium at The Helix on Dublin City University’s campus, with several asking questions of the president, including how he handles the pressure of leading a country under attack.

When asked if he found that social media was a new battlefield of war, Mr Zelensky said “absolutely”.

He added: “A battlefield that’s full of capabilities and unfortunately, Russia has been using that.

“They’ve spread the disinformation in many African and Asian countries, they have a powerful impact on Israel, on Germany and many other European countries, their TV channels with disinformation until recently worked in the United States and many other countries of the world.

“For the truths to be spread, it’s very difficult. It’s hard to overcome the false information… and it’s a component of this information war.

“We were powerful in the beginning of the war, we realised that we cannot (fight) Russia only with weapons on the battlefield because they have more of those weapons.

“But in the informational domain, we knew that if we would be able to penetrate this wall, to penetrate this informational lies, if we would be able to overcome this, in that case, would be able to unite the whole world and I believe that we did very well.

“This is not over yet, but still we’re hoping (Russian President Vladimir) Putin can hear us and that the information that we have is becoming a weapon and becoming a powerful weapon.”

When asked how he deals with the pressure of leading a country fighting off an invasion, Mr Zelensky said “perfectly normal, it’s not pressure for me”.

“I’m a calm person… Well, not every day surely. My team knows because there’s different days, different moments. That’s frankly speaking.”

He said that as a country and as a people, they had survived “many challenges” in their history.

“Some challenges are 10 years old, some challenges are 100 years old. So we are fighting for independence,” he said.

Preparation for the event has been in the works since the summer, when the Ukrainian Ambassador to Ireland Larysa Gerasko suggested it to the Irish government.

Addressing the conference, Ms Gerasko said that Russia was attempting “to punish those who openly defend international law, rule of law and democracy, and support Ukraine”.

She added: “As our president mentioned, the recent decision to ban the 52 Irish politicians from entering Russia is yet another demonstration of such blatant conduct.”

Minister for Higher Education Simon Harris said it was a momentous occasion and an “important and historic day”.

He said: “I think it’s fair to say that this is a moment of history, as President Zelensky takes time to speak to students here in Ireland, the future leaders of this country, to speak to students here in The Helix but also in 20 other locations right across our country today, students listening in to the President of Ukraine at this truly important time in global history.

“When history is written, let it be clear, we stood up and we spoke out, and we supported Ukraine.”