Valentyna Popova, an 85-year-old retired mathematician, lives in an apartment block on Kyiv’s east bank that is only minutes away from a city-installed "Invincibility Point," an emergency winter heating hub offering warmth, a place to charge devices, and sometimes tea or hot meals. She, however, is unable to reach the hub. While her flat is on the ground floor, mobility issues keep her inside, forcing her to rely entirely on volunteers stepping in to support residents that fell through the crac