BADGHIS, Afghanistan — As winter approaches, Afghanistan’s Kochis, a nomadic group in the western provinces, say they are struggling with economic hardships that threaten their way of life and their livestock, which is central to their survival.

BADGHIS, Afghanistan — As winter approaches, Afghanistan’s Kochis, a nomadic group in the western provinces, say they are struggling with economic hardships that threaten their way of life and their livestock, which is central to their survival.