A Ukrainian tank in Siversk near the front lines with Russia on January 21.Spencer Platt/Getty Images When Russia attacked Ukraine in February 2022, their militaries operated many of the same tanks. Ukraine upgraded many of its tanks before the war, but Russia also had newer, higher-quality tanks. As the war approaches its one-year mark, several countries have pledge to give Ukraine new tanks. A rare video from the frontlines shows one of Ukraine's upgraded Soviet-era tanks outperforming one of its newer Russian adversaries.In the footage, published online in December, a Ukrainian T-64BV and a Russian T-72B3 tank fought a deadly duel in the east of the country.