An Iranian lawmaker said Iran is waiting for the P5+1 group, including Britain, France, Russia, the United States, China and Germany, to take confidence-building steps to help advance the course of talks, the semi-official Mehr news agency reported Monday.

"In addition to permitting numerous inspections, the Islamic Republic has answered all questions and (cleaned up) ambiguities, and has always welcomed proposals to hold negotiations, so now the P5+1 group should take confidence-building steps," Hossein Naqavi- Hosseini, a member of Majlis (parliament) National Security and Foreign Policy Committee, said.

The latest round of talks between Iran and six world powers as well as the European Union (EU) ended in Moscow on June 19. The two parties failed to make a breakthrough at talks on Tehran's nuclear program, but agreed to meet again in Istanbul in July 3 at the expert level.

The lawmaker also said the only way to solve Iran's nuclear issues is to continue the talks, so Iran does not welcome an end to negotiations.

On new sanctions imposed on Iran by the United States and EU, Naqavi-Hosseini said it is not a right approach to increase sanctions while negotiations are underway, adding that "The P5+1 group should lift sanctions as the first step toward confidence- building."

The United States and EU have imposed several rounds of sanctions to pressure Iran to give up its uranium enrichment activities. Days after some fresh U.S. sanctions started prohibiting the world's banks from conducting oil transactions with Iranian banks, a new EU oil embargo that prevents its member states from buying Iranian crude took effect on July 1.

The United States, Israel and some other Western countries suspect that the Iranian nuclear program is a cover for building nuclear weapons. The Islamic republic has rejected the allegations and insisted on the "peaceful" nature of its nuclear activities.