"And those Western experts who think (the Oreshnik can be intercepted), let them suggest to us and those in the West who pay them to conduct a technological experiment," Putin said."Let's call it a high-tech duel of the 21st century. Let them determine some site to hit, let's say, in Kyiv, concentrate all their air defenses there, and we will strike there with the Oreshnik and see what happens."Russia launched an Oreshnik missile against Dnipro in Ukraine on Nov. 21, supposedly as a response to the U.S. and the U.K. lifting restrictions on Ukraine's long-range strikes inside Russia. The Oreshnik strike was followed by a propaganda blitz reportedly aimed at scaring off the Western support for Kyiv.Despite Putin's claims, Ukraine's President Volodymyr Zelensky said that there already are air defense systems that can successfully take down the missile The U.S.