Reuters - The United States and its European allies should ensure the 2015 nuclear deal is a success before demanding to negotiate on other issues such as Tehran’s regional activities or ballistic missile program, Iran’s deputy foreign minister said on Thursday.

“Now they ask Iran to enter discussions on other issues. Our answer is clear: make the (deal) a successful experience and then we discuss other issues,” Abbas Araqchi told a conference.

He said the new U.S. administration’s policy on Iran was “destructive” and violated the terms of the accord with world powers.

With U.S. President Donald Trump warning of a last chance for “the worst deal ever negotiated”, Britain, France and Germany are working on a plan to satisfy him by addressing Iran’s ballistic missile tests and its regional influence while preserving the 2015 accord.

Speaking to Reuters on the sidelines of a Euromoney conference in Paris, Araqchi said there was no link between its influence in the Middle East region and the nuclear accord with major powers.

Iran has repeatedly refused to discuss its missile program as demanded by the United States and the Europeans, saying it is purely defensive.

Tehran says its nuclear program is only for peaceful purposes and that it will stick to the accord as long as the other signatories respect it, but will “shred” the deal if Washington pulls out.