On Tuesday, Russia’s foreign ministry accused Israel of backing neo-Nazis in Ukraine, deepening a spat that began when Russian Foreign Minister Sergei Lavrov claimed Adolf Hitler was Jewish.

On Monday, Israel slammed Lavrov, claiming his assertion about Ukrainian President Volodymyr Zelenskiy, who is Jewish, was a “unforgivable” lie that debased the tragedies of the Nazi Holocaust.

Several Western leaders condemned Lavrov’s remarks, and Zelenskiy accused Russia of forgetting World War II’s lessons.

According to the Russian Foreign Ministry, Israeli Foreign Minister Yair Lapid’s remarks were “anti-historical” and “explained to a significant extent why the present Israeli administration supports the neo-Nazi dictatorship in Kyiv.”

Moscow reinforced Lavrov’s assertion that Zelenskiy’s Jewish ancestry does not bar neo-Nazis from running Ukraine.