NEW YORK — Sundance Channel has picked up U.S. rights to the documentary “Life After War.”Film follows former NPR correspondent Sarah Chayes, who spent four years reporting on war and decided to take an active part in reconstructing a nation recovering from conflict. Doc focuses on her work with Afghans for Civil Society, a non-governmental org promoting a democratic alternative in Afghanistan. Quyam Karzai, org’s head and brother of Afghanistan’s president, is also featured in “Life.” Brain Knappenberger wrote and directed pic, which was exec produced by Larry Hart. Marc Halperin and Maria Lewin Halperin co-produced. Deal was brokered by Sundance’s Christian Vesper and Marc Halperin. Sundance will air the pic Dec. 1 under its DocDay banner.