As Russia's military operation in Ukraine continues, there's growing concern over the humanitarian crisis. The worst humanitarian situation is reported from the southern port city of Mariupol, where Ukraine says about 160,000 civilians are encircled by Russian forces, desperate for food, water and medicine. Kyiv says the situation there is "catastrophic" and Russia's military operation has turned a city once home to 450,000 people "into dust." The Ukrainian government also estimates that the economic damage from the conflict has reached nearly $565 billion.