In today’s newsletter: A researcher with a focus on the region explains what’s behind deadly nationwide demonstrations and what a hardening of public opinion against the state might bringGood morning. At least 648 people have been killed by Iran’s security services during nationwide demonstrations, with more than 10,600 arrested. The unrest is widely seen as the most serious challenge to Iran’s Islamic Republic in recent years.People took to the streets for reasons ranging from rising economic hardship to long-simmering anger over political repression and civil rights. Together, they represent a hardening of public opinion against the state.Iran | Donald Trump