Mendel: President Zelenskyy has never been afraid to go to the front lines of war

Iuliia Mendel, former press secretary to Ukraine's President Volodymyr Zelenskyy, speaks with Rosemary Barton Live about the shift in momentum in the war as Ukraine retakes part of its territory from Russian occupation. She also offers her thoughts on why Zelenskyy has emerged as the key leader in Europe.