“But the war has come again, it is here, and now it is in Ukraine, and it is not going to stop on our land," Mr Zelenskyy said.
"And it has already become as brutal as the war which victory we remember every year in May.
“Then, on March 29, I told you that the Russian occupiers destroyed 773 educational facilities in our country, and today it is twice many — 1,584."
Mr Zelenskyy drew attention to the number of children killed in the conflict.
"These are kindergartens, these are schools, these are universities. This is what the Russian army is fighting against in Ukraine," he said.
"The invaders have already killed 220 Ukrainian children and we do not yet know precisely what is happening in the occupied areas.
“Russia is not yet ready to stop the war. They still dream of capturing Ukraine and other European countries. They desire that freedom in Europe must disappear. But their dreams must not come true.
"The dream of peace must come true. Ours and your dream. Just like it was 77 years ago. How people will live on our continent is being decided right now, exactly in Ukraine.”
“But I believe that our day of liberation is approaching."