VIENNA - UN nuclear agency chief Yukiya Amano said Sunday's visit to Tehran was useful and that he was very glad to hear a firm commitment from Iran to resolve all outstanding issues through cooperation between the two sides.

Amano's trip came ahead of an Aug. 25 deadline for Iran to provide information relevant to the International Atomic Energy Agency's (IAEA) inquiry into what it calls the possible military dimensions of the country's disputed nuclear programme.

"This has been a short visit, but a useful one," Amano said in Tehran after talks with President Hassan Rouhani and other senior Iranian officials, according to a statement issued by the IAEA in Vienna.

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