As tensions simmer in Iran, the country’s exiled crown prince, Reza Pahlavi, has issued a fresh call for agitation—this time urging Iranians to not just protest, but to seize and hold city centers across the nation.

Pahlavi, whose previous appeals played a role in bringing thousands onto the streets, addressed the nation on Saturday with a message that marked a dramatic escalation in the anti-government uprising now engulfing all 31 provinces of Iran.