Former Navy SEAL Erik Prince, the founder of the Blackwater security firm, said it was ironic that Democrats used to "love" what is now Russia.
He pointed to Democrats' continued drumbeat of criticisms toward Trump and allegations that the president has colluded with Russia.
"During the Cold War... the left loved the U.S.S.R. [They] never criticized it ever," Prince said. "They're the party of lynch mobs and Jim Crow laws."
Tucker Carlson asked why the Democrats would make such a sudden pivot regarding Russia.
Prince said that President Vladimir Putin does not subscribe to their progressive worldview as Soviet leaders did.
He said Trump was likely trying to conduct meaningful relations with Moscow when he divulged a piece of classified information regarding terrorism.
Prince said Russia and the United States face an equal threat from ISIS and will sometimes have to work together.
Watch the full discussion above.