Addis Ababa: Tehran is optimistic about the International Atomic Energy Agency (IAEA)'s visit to the country and it is ready to reply to any concerns raised by them, said Iranian Foreign Minister Ali Akbar Salehi on Sunday.

"We will eventually show that Iran is a faithful member of the IAEA and shall remain so and that our nuclear activities are transparent," reported Salehi as telling reporters on the sidelines of the ongoing 18th African Union summit being held here.

"There is nothing obscure in our nuclear activities. We have proved this for the past 10 years." A high-ranking IAEA delegation arrived in Iran Sunday and will pay a visit to Iranian nuclear facilities.

The IAEA visit has come amid strong sanctions by the US and possible sanctions from the European Union as they try to convince Iran to give up its nuclear programme that they claim is being used to develop arms. Iran maintains that it is enriching uranium to generate electricity.