Bone fragments from the sword hand of a medieval Russian prince who won a famous victory over the Mongols have been sent to the front in Ukraine. The sarcophagus of Grand Prince Dmitry Donskoy was uncovered this summer during restoration work at Moscow's Cathedral of the Archangel inside the Kremlin. Key points and original sources are listed below.

• Bone fragments from the sword hand of a medieval Russian prince who won a famous victory over the Mongols have been sent to the front in Ukraine.S1

• The sarcophagus of Grand Prince Dmitry Donskoy was uncovered this summer during restoration work at Moscow's Cathedral of the Archangel inside the Kremlin.S2