The US and Iran are in a stalemate. Messages are being exchanged but only from the Iranian side. The US president has not mentioned the negotiations in over 50 social media posts. The deal could fall apart at any moment due to disagreements over nuclear weapons, the Strait of Hormuz toll system, and reparations.
Trump's red lines are that Iran must never develop a nuclear weapon and must open the Strait of Hormuz for free-flowing traffic. The Iranians want to set up a toll system and seek reparations.