A dam along the river that separates Russian and Ukrainian troops in southern Ukraine was destroyed early Tuesday morning, with each side blaming the other.
Why it matters: The explosion carries the immediate prospect of severe flooding in communities around the reservoir, which is near the city of Kherson, and a longer-term risk of overheating at the massive Zaporizhzhia nuclear power plant. Water from the Kakhovka dam's reservoir was used to cool the plant's reactors.
