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Social Media in Iran

Iranians surf the web at an Internet cafe, in Tehran, Iran.

Social Media Blocked Again in Iran

Word of the opening of Iran's blocked social media sites was spread, of course, by social media itself: in celebratory tweets and breathless Facebook posts. Hours later, the same sites Tuesday chewed over the sobering reality that the four-year-old firewalls were back in place.

Iran's Internet overseers blamed a "technical" glitch on the brief window to the Web.

But others interpreted the seesaw events as signs of growing internal struggles between the moderate-leaning President Hasan Rouhani — who has promised to ease Iran's cyber-censorship — and hard-liners in the Islamic establishment who see no benefit in lifting restrictions intended to foil potential political opponents and reformists.

Reporting by Brian Murphy and Nasser Karimi, Associated Press.