Iranian President Mahmoud Ahmadinejad on Tuesday accused Washington, Tehran's arch-foe, of planning to sabotage Pakistan's nuclear facilities, during a media conference in Tehran.
"We have precise information that America wants to sabotage the Pakistani nuclear facilities in order to control Pakistan and to weaken the government and people of Pakistan," the hardline president said.
The United States would then use the UN Security Council "and some other international bodies as levers to prepare the ground for a massive presence (in Pakistan) and weaken the national sovereignty of Pakistan," he added, without elaborating.
Pakistan is the only Islamic nation with nuclear weapons, and has close relations with Iran.
In order to fight Al-Qaeda and Taliban insurgents in Pakistan, Washington has intensified its aerial operations in Iran's southeastern neighbour.
Pakistani Islamist groups have at the same time multiplied their assaults on Pakistani military convoys and also on transport and fuel convoys through Pakistani territory intended for NATO troops in Afghanistan.