Tehran, July 26 -- At least 50,000 officials from within Iran's government and military have registered with a secure opposition platform aimed at toppling the Islamic Republic, according to Reza Pahlavi, the exiled son of Iran's last monarch.

Pahlavi, the son of Iran's last monarch overthrown in the 1979 revolution, has long positioned himself as a potential transitional figure in a post-theocratic regime in Iran launched the platform last month, offering defectors from all branches of service- from politics to law and military - a channel to connect and coordinate and formulate strategies for the ouster of the theocratic regime.

Speaking to Politico, he said the figure - though still under verification - points to a growing movement...