Iran's right to use nuclear technology for peaceful purposes is not negotiable, said Iranian Vice President Pervez Dawoodi while addressing a joint press conference with Prime Minister Shaukat Aziz at Prime Minister's House on Thursday. "How can Tehran expect the world to fulfil its energy requirements?" queried Dawoodi. "How is it possible to stop any country from scientific advancement and if Iran accepts this, the world may force us to close down our chemistry and physics laboratories in our universities."The Iranian vice president said Iran had been under sanctions and "hostile countries" had even refused to provide spare parts for passenger planes. "Iran cannot accept assurances of anyone fulfilling its energy needs under such circumstance," he said. Nuclear arms had no place in Iran's military strategy but every nation had the right to used nuclear technology peacefully, he added. "Iran is willing to continue negotiations with the world, and countries not hostile towards it — who think nuclear technology is their sole right."