Workers load sacks of wheat on a freight train in Khanna, Punjab state. India, the world's second-largest producer of wheat, has banned exports without special authorisation from the government. AFP
Workers load sacks of wheat on a freight train in Khanna, Punjab state. India, the world's second-largest producer of wheat, has banned exports without special authorisation from the government. AFP

Could India's U-turn on wheat exports threaten its global trade ambitions?