The UN's nuclear watchdog will once again highlight concern about possible military aspects to Iran's nuclear activities in its latest quarterly report. The report is due to be submitted to member states in the next few days. Western officials have dismissed Iran's efforts to show rare openness about its disputed nuclear program as charm offensive. Western nations suspect Iran is trying to use its nuclear program to develop atomic weapons.The Islamic Republic has denied the charge, saying it wants to produce nuclear energy. The UN International Atomic Energy Agency (IAEA) -- tasked with ensuring that nuclear technology is not diverted for military aims -- has repeatedly complained about Iran's lack of cooperation over allegations of military-linked nuclear work.