Zelensky: Without U.S. help, war in Ukraine would become "a frozen conflict"

In an exclusive interview with CNN's Erin Burnett, Ukrainian President Volodymyr Zelensky assesses Putin's position to be "weak," but warns what would happen without U.S. help. Zelensky also says that it will be up to President Biden whether or not Ukraine will join NATO. Meanwhile, special counsel zeroes in on Trump lawyers amid signs that the "Fake Electors" probe is nearing its end. This and more as Erica Hill covers Outfront for Erin Burnett.To learn more about how CNN protects listener privacy, visit cnn.com/privacy