The United Nations' nuclear chief says Japan's nuclear crisis has exposed serious problems in how governments respond to disasters, and how they must improve their responses.
Yukiya Amano says information must be transmitted more quickly by governments and that international experts must exchange information more rapidly.
He also said Monday in remarks to a 35-nation emergency meeting of the International Atomic Energy Agency that the role of the agency itself may need to be reviewed.
The session was called in response to Japan's nuclear disaster, which happened when a huge earthquake and massive tsunami knocked out the power supplies of the Fukushima Dai-ichi nuclear complex. The accident 10 days ago sent radioactive gas into the air.