With Islamic countries, of course. From [1] AP, with thanks to CGiddensJr:

UNITED NATIONS — Iran is willing to provide nuclear technology to other Muslim states, Iran's hard-line president said Thursday. Hours later, European nations renewed an offer of economic incentives if the Mideast nation would halt its uranium enrichment.

President Mahmoud Ahmadinejad made the comment after talking with Turkey's prime minister during a gathering of world leaders at the United Nations, Iran's state-run Islamic Republic News Agency said.

Ahmadinejad repeated promises that Iran will not develop nuclear weapons, the report said. Then he added: "Iran is ready to transfer nuclear know-how to the Islamic countries due to their need."

And what would constitute their need? A need to annihilate Israel? A need to destroy American cities?