Prime Minister Manmohan Singh on Saturday said Iran should fulfill all its obligations as a signatory to the Nuclear Non-proliferation Treaty (NPT),while it also enjoys rights under that agreement. Answering a question on US,Britain and France threatening sanctions against Iran for secretly pursuing uranium enrichment facility,Singh told a press conference here that Iran issue did not come up during the G-20 Summit. "Our position is that Iran as a signatory to the NPT has all rights to peaceful use of atomic energy and also should carry out its obligations," he said.