India rehearses war near Pakistan border

Deep in the sandy scrublands of the Thar Desert near the Pakistan border, thousands of Indian air force and army troops are fighting mock battles, swooping into "enemy" territory and "capturing enemy assets".

At least 50,000 troops and 120 aircraft are engaged in India’s largest ever military exercise in western India’s Rajasthan state, practising for future battle scenarios that may involve nuclear, biological and chemical weapon strikes.