Capt. Kearney's Quagmire

Elizabeth Rubin: WE TUMBLED OUT of two Black Hawks onto a shrub-dusted mountainside. It was a windy, cold October evening. A half-moon illuminated the tall pines and peaks. Through night-vision goggles the soldiers and landscape glowed in a blurry green-and-white static. Just across the valley, lights flickered from a few homes nestled in the terraced farmlands of Yaka China, a notorious village in the Korengal River valley in Afghanistan's northeastern province of Kunar. Yaka China was just a few villages south and around a bend in the river from the Americans' small mountain outposts, but the area's reputation among the soldiers was mythic. It was a known safe haven for insurgents.…