Iranian senior lawmaker, Kazem Jalali, said Monday that the upcoming nuclear talks between Iran and world powers in the Russian capital Moscow would test the West 's will to help the process of talks yield positive results, the semi-official Mehr news agency reported.

The Islamic republic has always regarded transparent and purposeful negotiation as the best approach to the Iranian nuclear issue, Jalali told Mehr.

According to the semi-official Fars news agency, Iranian Foreign Minister Ali-Akbar Salehi also expressed hope that the upcoming nuclear talks in Moscow would be a "step forward" in resolving the existing differences between Iran and the West.

Speaking at a meeting with visiting former president of the Austrian National Assembly Werner Fasslabend in Tehran on Sunday, Salehi stressed that the progress in the upcoming talks between Iran and the P5+1 (the five permanent UN Security Council members plus Germany) in Moscow depends on creation of an atmosphere of mutual trust, said the report.

The next round of talks between Iran and P5+1, is scheduled to be held in Moscow on June 18-19.