Volodymyr Zelenskyy has branded Vladimir Putin a "worthless" leader for his response to the Crocus City Hall attack.
The Ukrainian president laid into Mr Putin for staying "silent for a day" before falsely blaming Ukraine in a "completely predictable" move.
The thousands of Russians dying on Ukrainian soil would be better used stopping terrorists at home, said Mr Zelenskyy.
"They [Russia] drove hundreds of thousands of their terrorists here, on Ukrainian soil.
"They are fighting against us and they don't care what happens inside their own country.
"All this happened yesterday, and this worthless Putin, instead of dealing with his citizens of Russia, addressing them, remained silent for a day - thinking how to bring this to Ukraine. Everything is completely predictable."
"The hundreds of thousands of Russians who are currently being killed on Ukrainian soil would certainly be enough to stop any terrorists."
