The president of the United States, Donald Trump, said on Friday that the United States would not go back on its sanctions against Iran in return for discussions.

"Iran wanted me to lift sanctions on them before we met. Of course, I said no !", said Trump in his tweet... Iranian President Hassan Rohani said earlier the same day that the leaders of Germany, the United Kingdom and France were encouraging Iran to talk with the United States, and that they could lift all sanctions, according to the official website of Mr. Rohani.

Trump, for his part, threatened to further harden his "maximum pressure campaign" against Iran in his speech to the UN General Assembly."As long as Iran's threatening behavior continues, sanctions will not be lifted. They will be hardened, " said Trump. The two leaders did not meet in New York this week.