"Stop listening to all of your advisers who say Zelenskyy is a dead man walking," the Nebraska Republican said on "Fox News Sunday" in a reference to Volodymyr Zelenskyy, the Ukrainian president who addressed Congress last week in a quest for additional support. Sasse added: "Stop listening to those who say that Ukraine is inevitably going to lose. We should hear the president's strategy to help Ukraine win. We should be on the side of these freedom fighters, and we're too slow in almost every step we take."