Iran's foreign minister says he is not interested in negotiating with the United States after it pulled out of a 2015 nuclear deal and reinstated stifling economic sanctions on Tehran.

"No, there is no possibility for negotiations," Mohammad Javad Zarif said when asked in an interview with reporters Thursday in Tokyo whether he would be open to holding bilateral talks aimed at easing tensions, including discussions of a proposed prisoner swap.

Zarif had said as recently as April that he was willing to exchange foreign prisoners in Iran for Iranian prisoners in the United States, Germany and Australia held on "phony" charges.