Iran's chief nuclear negotiator Ali Larijani (C) and European Union foreign policy chief Javier Solana are surrounded by journalists in Vienna September 10, 2006.-Xinhua/Reuters

The European Union (EU) and Iran have made headway in their nuclear talks in Vienna, officials of both sides declared on Sunday.

The meeting was "constructive," according to EU foreign policy chief Javier Solana and top Iranian negotiator Ali Larijani. They also said the two sides would continue talks next week.

"We have clarified some of the misunderstandings that existed before," Solana said. "We have made progress" and "we are going to meet next week," he added.

Larijani also said that "many misunderstandings were removed" in talks with the EU.

The progress was announced as the United States was pressing for sanctions against Iran over its refusal to suspend uranium enrichment.