Why did diplomacy fail between the US and Iran?

"His country mediated negotiations between the United States and Iran, with the latter offering assurances that it would not seek to acquire nuclear material for the production of an atomic bomb. This commitment was a "very important breakthrough" that had "never been achieved any time before," al-Busaidi told US broadcaster CBS News."

"Our objective is to defend the American people by eliminating imminent threats from the Iranian regime," Trump said in a video message. Israeli Prime Minister Benjamin Netanyahu made a similar argument. "This murderous terrorist regime must not be allowed to arm itself with nuclear weapons that would enable it to threaten all of humanity.""

"Against this backdrop, there are now questions about whether there were fundamental misunderstandings in the analysis of talks, and how plausible the official reasons for the attack might be. But Marcus Schneider, head of the Friedrich Ebert Foundation's Beirut-based Regional Peace and Security Project in the Middle East, considers this kind of confusion unlikely."

Oman mediated talks between the United States and Iran in Geneva, resulting in Iran providing assurances it would not seek nuclear material for atomic weapons. Omani Foreign Minister Badr al-Busaidi called this a "very important breakthrough" never achieved before, while Iranian Foreign Minister Abbas Araghchi highlighted "progress" and "mutual understanding." However, early Saturday morning, the US and Israel launched airstrikes against Iran. President Trump justified the attacks citing "threats" from Tehran and stated the military commenced "major combat operations." Israeli Prime Minister Netanyahu similarly argued the action was necessary to prevent Iran from acquiring nuclear weapons. Experts question whether fundamental misunderstandings occurred during negotiations or whether the stated justifications for the attack are credible.

Read at www.dw.com