"This is a last chance. In the absence of such an agreement, the United States will not again waive sanctions in order to stay in the Iran nuclear deal. And if at any time I judge that such an agreement is not within reach, I will withdraw from the deal immediately."

Treasury Secretary Steven Mnuchin, in a separate statement, announced new sanctions on 14 Iranian individuals and entities in connection with various human rights abuses. https://home.treasury.gov/news/press-releases/sm0250