The latest round of nuclear talks with Iran were "constructive" and will be resumed in three weeks, European Union foreign policy chief Javier Solana said in Lisbon on Saturday.

The talks with Iran's nuclear negotiator Ali Larijani on Saturday "have been a constructive meeting," Solana told reporters after the talks.

"I have to tell you that probably in three weeks we will try to see if we can meet again," Solana said.

Larijani also described the talks as constructive, but warned that any new UN sanctions would derail further negotiations.

Referring to the prospect of new UN Security Council sanctions, Larijani said it would be natural for some countries to try to interrupt the negotiation process.

"For (most) countries, the prevalence of tranquility would be more important," he said, adding that Iran wanted to solve the nuclear issue with the West through diplomacy.

The top nuclear envoy of Iran said the international community should seek to keep negotiations alive instead of suffocating them.

The UN Security Council members -- the United States, Britain, Russia, France, Germany and China -- are discussing another set of sanctions against Iran's nuclear ambitions.

The council has imposed two sets of sanctions against Iran for its refusal to freeze both its uranium enrichment and construction of a heavy-water reactor for producing plutonium.

Iran insists that it wants to generate electricity by developing nuclear power so that it can save more oil for exportation. Iran is OPEC's second largest oil exporter.

Source: Xinhua