When the Russian-controlled Kakhovka dam in southern Ukraine burst, it unleashed the worst environmental crisis in decades, massive flooding, and acute human and animal suffering. Culpability—whether through extreme negligence or deliberate mining—lies squarely at Russia's feet. The shock of this catastrophe is surpassed only by Russian forces' eagerness to worsen it. Ukrainian civilians, including the country's chief rabbi, were shelled as they tried to flee, while Russians blocked civilian evacuations and taunted, "You're all going to die here." This watershed event ominously signals more scorched earth tactics. But Russia's targeted violence against Ukrainian civilians has already proven painfully durable. Kherson...