Tehran, March 24, IRNA-Iran's Foreign Ministry spokesman Hamid- Reza Asefi said Thursday the Paris talks had been "serious and complicated" but "helpful." Asefi said that in that round of talks, held to investigate and assess the outcome of several rounds of talks at the political, the nuclear-security and the economic-technology committees, the Iranian delegation proposed to the European negotiators a set of ideas to gain objective assurances and firm commitments for settlement of the case.

Asefi said the ideas the Iranian negotiating team raised in that round of talks, confirmed Iran's seriousness to build up confidence with the European parties.

He said that the talks can be cautiously taken as a "step forward and constructive". Therefore, added Asefi, the talks would resume in the coming weeks.

Another round of the Iran-EU3 nuclear talks were held in Paris Wednesday without reaching final accord.

Senior Iranian negotiator with the EU big three on Iran's peaceful nuclear program Sirous Nasseri said here Wednesday night that the talks had ended without reaching a final accord and each side maintained its own views.

Nasseri told reporters that the all four parties (Iran and Britain, France as well as Germany /EU big three/) would meet again soon to continue negotiations.

He said that certain proposals had been floated which he thought could lead to an agreement.

"Ideas have been raised which could, if agreed, serve as a basis for an agreement in the future. It's still too early to comment.

Things remain as they were," he said.

He also restated Iran's position that giving up uranium enrichment permanently was not an option.

"This is not something we are prepared to consider. However, as you know, the Europeans have a view on that," Nasseri said.

Nasseri was asked if there had been discussion of the U.S. offer to sell Iran plane spare parts and stop blocking Iran's entry into the World Trade Organization (WTO) in return for ending enrichment.

Nasseri said: "No, we are negotiating with the Europeans, not with the Americans."