Explainer: Why U.S.-Iran talks failed to reach an agreement

"We only accept an end of the war with guarantees that we won't be attacked again," said Mojtaba Ferdousi Pour, head of the Iranian diplomatic mission in Cairo, ahead of the talk. BEIJING, April 12 (Xinhua) -- After 21 hours of marathon-like negotiations, the United States and Iran failed to reach an agreement in the latest round of talks, U. S.