The former head of Russia's space agency, Dmitry Rogozin, sends shrapnel to the French ambassador.
Rogozin claims he was injured in a shelling by Ukrainian forces on December 21 in Donetsk.
The accompanying letter to the ambassador contains strong words for French President Macron.
Rogozin accuses France of being a "bloodthirsty" state and a "puppet" like the Vichy government.
France has provided weapons, including Caesar cannons, and increased military aid to Ukraine.
International agencies accuse Russia of committing war crimes in Ukraine.
Rogozin co-founded a far-right party, led a space agency, and now heads "Tsar's Wolves" group in Ukraine.
Two were killed, and several were injured in shelling that injured Rogozin on his 59th birthday.
French foreign ministry declines to comment on Rogozin's letter.