The United States and its partners in the Iran nuclear talks are trying anew to convince European banks and businesses that now-legal trade with the Islamic Republic won't be punished.

The U.S., Britain, France, Germany and the European Union said in a statement Thursday that Iran deserves the sanctions relief it's due under last year's landmark nuclear deal. "This includes the reengagement of European banks and businesses in Iran," they said.

Iran complains that U.S. sanctions that remain on the country are preventing it from receiving the full benefits of the deal under which it agreed to curb its nuclear program in exchange for sanctions relief. The U.S. maintains it has met its obligations, but has been trying to convince foreign firms that some trade with Iran is now legal.