Iran's foreign minister is extolling the country's ability to bring its nuclear program back on track as limits on the 15-year accord ease in the coming years.

Mohammad Javad Zarif says a document, submitted by Iran to the International Atomic Energy Agency and outlining plans to expand Iran's uranium enrichment program, is a "matter of pride."

He says it was created by Iran's "negotiators and experts."

Zarif's remarks, carried by the semi-official Fars news agency on Tuesday, followed revelations the day before of the confidential document — an add-on agreement to the nuclear deal with world powers — that Iran gave the IAEA.

The document, obtained by The Associated Press in Vienna, outlines Tehran's plans to expand its uranium enrichment program after the first 10 years of the nuclear deal.