Tanks have been a game-changing technology in warfare for a century, and Ukraine was the site of major tank battles in World War II. In the current Russia Ukraine war, both sides have used Soviet-era tanks, with the most numerous being updated versions of the T-72. But as the war drags on, more modern equipment is making its way to the conflict, notably the Russian T-90 main battle tank. Currently, European NATO nations and the Biden Administration have authorized the transfer of advanced Western main battle tanks, the German Leopard 2 and the U.S. M1 Abrams. It appears that a technological showdown is shaping up between NATO and Russia in tanks and the results will likely influence tank design for years. Want to watch this podcast as a video? This Week in Engineering is available on engineering.com TV along with all of our other shows such as End of the Line, Designing the Future, Manufacturing the Future, and the Engineering Roundtable.