As tensions between India and China deepen amid an increasing fractious border dispute, the world is heading for a shortage of cashmere wool, a highly prized and super soft material that comes from pashmina goats living on the “roof of the world”.Wool from pashmina goats, reared by nomads in the inhospitable high-altitude cold desert region of Ladakh, is the most expensive and coveted cashmere in the world.But the shaggy creatures that provide the yarn are being pushed out of their grazing…