Iran's foreign minister says Tehran will restart its uranium enrichment program if Friday's talks with European nations fail.
Kamal Kharrazi spoke to reporters at The Hague, saying if the two sides fail to resolve the impasse Friday, then Tehran "will have no choice" but to restart its enrichment program.
Britain, France and Germany, backed by the United States, want Iran to permanently give up uranium enrichment, which can be used to fuel nuclear weapons.
European officials have offered economic incentives in exchange for abandoning enrichment, but Tehran has resisted, saying its enrichment activities are for peaceful purposes.
Iran agreed in November to stop enriching uranium, but has insisted the move is temporary.
Some information for this report provided by AP and Reuters.