United Nations officials have been "blocked" from accessing "besieged cities like Mariupol, Mykolaiv and Kherson" — raising concerns of mass starvation in the Ukrainian cities that have been devastated by Russia's military invasion.
Driving the news: That's according to UN World Food Program chief David Beasley, who told CBS' "60 Minutes" journalist Scott Pelley in an interview broadcast Sunday that denying civilians in the eastern Ukrainian cities access to food was "just wrong, evil."