Iran Supreme Leader's message to US: Mojtaba Khamenei calls Trump's signature worthless

Iran's Supreme Leader Mojtaba Khamenei on Saturday warned the United States of "unforgettable lessons" if it continued attacking the Islamic Republic, while declaring that US President Donald Trump's signature was "worthless and invalid."The written statement, read out on Iranian state television, came hours after Tehran announced it was suspending its commitments under the interim agreement signed about a month ago, as the United States and Iran continued exchanging strikes on military and infrastructure targets. "Now that the American enemy is seeking to escalate the conflict thereby incurring even heavier costs and further humiliation, it should know that the noble nation of Iran and the Resistance Front have unforgettable lessons in store for it," he said.Khamenei further accused Washington of violating the agreement, saying the "US president's signature is 'worthless and invalid'".