According to Mark Bromley of the Stockholm International Peace Research Institute, Colombia has also been talking to Sweden about buying an airborne early-warning system and a tanker plane.
Over the last five years, India has been the world's biggest importer of weapons, mostly from Russia, said a report published by the Stockholm International Peace Research Institute Monday.
The Stockholm International Peace Research Institute has estimated that by 2009 China had 186 deployed strategic nuclear warheads, compared to 2,202 for the United States and 2,787 for Russia.