"The Archaeological Survey of India (ASI) has joined an international network for the return of priceless artifacts taken away during British rule, including the Kohinoor diamond and the Sultanganj Buddha. ASI Director-General Gautam Sengupta said the list of India's treasures held abroad was "too long to handle" and there was a need for a "diplomatic and legal campaign" for their restitution from institutions, including the British Museum, the Royal Collection and the Birmingham Museum and Art Gallery."