Iran’s top nuclear negotiator criticizes a US-backed peace agreement immediately after it is signed, according to two reports. The Daily Express and the Mirror both say the negotiator mocks the deal as an “ultimate American failure” and describes it as a failure that will not be permanently associated with Iran. Both sources frame the comments as a rejection of the agreement’s substance or expected impact, rather than as a dispute about the signing process itself. The reports indicate Iran’s criticism is directed at the United States and the deal’s legitimacy or outcome, with the negotiator presenting the agreement as something that will not achieve its intended goals. While the articles focus on Iran’s reaction, neither provides detailed terms of the agreement in the excerpts provided. Overall, the sources agree that the peace deal is signed and that Iran publicly responds with strong, dismissive language aimed at the US.