MUNICH — Iran’s foreign minister is rejecting the idea that Tehran wouldn’t respond if the United States gives up on the 2015 nuclear accord with world powers.

Israeli Prime Minister Benjamin Netanyahu, an opponent of the deal, said Sunday that if the U.S. refuses to keep approving the deal “I think they’ll do nothing.”

But Iran’s Mohammad Javad Zarif told the Munich Security Conference that was “delusional thinking.”

He said: “I can assure that if Iran’s interests are not secured, Iran will respond, will respond seriously and I believe it would be a response that means people would be sorry for taking the erroneous action they did.”

Zarif said that “we will not be the first ones to violate” the agreement.