The son of the ousted shah of Iran has spoken out against any deal with Iran that leaves the Islamic government in place, as Washington prepares to sign an agreement with Tehran, AFP reports.

Speaking after meeting MPs during a visit to London, 65-year-old Reza Pahlavi says the international community should back opposition protesters rather than making peace with Iran.

“Dealing with this regime will fail and we will all face the consequences,” he declares in a social media post. “The regime’s 47-year war against the Iranian people continues. Just as it has never made peace with its own citizens, it will never truly make peace with the world.

“Any agreement that preserves this regime or its remnants will fail. The Iranian people will not accept it,” Pahlavi warns. “With or without international support, the people of Iran will overthrow this regime. Freedom will come to Iran.”