Iran's president has denied engaging in military cooperation with North Korea amid strong international criticism of its nuclear programs.

Speaking to Japanese media in Tehran, President Mahmoud Ahmedinejad said he was making efforts to maintain good ties with all nations except Israel.

When asked if Iran was working with North Korea on ballistic missile development, he replied they had no such cooperative system.

A Japenese daily, the Yomiuri Shimbun, added that the Iranian leader reiterated that his country had no intention to develop nuclear weapons.

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