Iran's foreign minister says he remains hopeful that talks with the European Union on Tehran's nuclear program will lead to what he calls a "very fruitful agreement."

Iranian Foreign Minister Kamal Kharrazi made his remarks Tuesday after conferring with Hungarian officials in the capital, Budapest.

EU officials have been trying to persuade Iran to give up its uranium enrichment program in exchange for economic incentives, and help in obtaining a light-water reactor, which can only be used for energy production.

The United States accuses Iran of secretly working to develop nuclear weapons. Tehran strongly denies the allegation, insisting its nuclear program is only for making electricity.

On Sunday, an Iranian foreign ministry spokesman Hamid Reza Asefi said Iran will not, under any circumstances, halt its plans to build a heavy-water reactor.

Some information for this report provided by AP and AFP.