CIA Director William Burns said Thursday that the U.S. cannot “take lightly” the possibility that Russia could use tactical nuclear weapons as it grows more desperate in its military attack on Ukraine. “Given the potential desperation of [Russian] President [Vladimir] Putin and the Russian leadership, given the setbacks that they’ve faced so far militarily, none of us can take lightly the threat posed by a potential resort to tactical nuclear weapons or low-yield nuclear weapons… The Hill Photo: Sputnik / Valeriy Melnikov