U.S. President Joe Biden said this in Warsaw on Saturday, according to an Ukrinform correspondent.
"There can be no doubt that this war has already been a strategic failure for Russia," Biden said.
He stressed that Putin miscalculated when he thought that the Ukrainian people would not offer any resistance. Russian troops were met with brave and stiff resistance from the Ukrainians, and Russia's brutal tactics have strengthened the resolve, Biden said.
In this regard, he also said that Russian President Vladimir Putin should no longer be the leader of his country: "For God's sake, this man cannot remain in power."
Biden also added: "My message to the people of Ukraine is a message I delivered today to Ukraine's foreign minister and defense minister, who I believe are here tonight. We stand with you. Period."
He stressed that the people of Ukraine are now on the front lines fighting to save their nation. "Their brave resistance is part of a larger struggle for essential democratic principles that unite all free people," Biden said.
In this regard, he said that Ukraine will never be a victory for Russia.