Ukraine is facing its toughest winter, with temperatures dropping below -15C and Russian attacks on energy infrastructure leaving millions without heating. Kyiv is particularly affected, with thousands of apartment blocks lacking heat. Residents like Rita describe the daily uncertainty of basic amenities. The reliance on centralized heating systems, a legacy of Soviet construction, exacerbates the situation, making it difficult to adapt to the ongoing attacks. The Ukrainian government is aware of these vulnerabilities and plans to implement changes, but the process will be challenging.