Iranian President Mahmoud Ahmadinejad said on Friday the world's nuclear powers "want to monopolise" technology for their own gain, after Tehran was hit with new UN sanctions over its suspect programme.
"Nuclear states do not allow others to even peaceful use nuclear energy," Ahmadinejad said in a speech in Shanghai marking "Iran Day" at the World Expo.
"Some of them have used destructive bombs. They are the perpetrators of using these weapons but they would prevent others from peacefully using nuclear technology," he said.
"They want to monopolise science and technology for themselves to protect their material interests."
The Iranian leader's comments come after the UN Security Council hit Tehran with a new round of sanctions. Iran says its programme is purely for civilian energy purposes but the West suspects it is developing atomic weapons.