The International Atomic Energy Agency said Thursday it was ready to begin defining concrete steps needed to implement a U.S.-Iran deal to end the Middle East War.

U.S. President Donald Trump and Iranian President Masoud Pezeshkian signed a deal Wednesday to end the Middle East War, with Tehran agreeing to dilute its enriched uranium in return for large-scale economic relief.

"Now it's for us to sit down with our American colleagues, our Iranian colleagues, and start formulating the concrete steps that will have to be taken," IAEA chief Rafael Grossi told reporters in Geneva.

The deal aims to end the war launched by the United States and Israel on Feb. 28, prompting Iran to counterattack with missile and drone salvos across the region, effectively shutting down the Strait of Hormuz, a crucial global waterway.

Washington responded by blocking shipping to and from Iranian ports.