The Kremlin said it has declared a cease-fire to open humanitarian corridors, allowing citizens to evacuate from some of Ukraine’s largest cities, including Kyiv, Kharkiv, Mariupol and Sumy. LEARN MORE: Russia-Ukraine live updates: https://abcn.ws/3HNuvD0 #ABCNews #UkraineUnderAttack #Ukraine #Ceasefire #Kyiv #Kharkiv #Mariupol #Sumy