"Khamenei's position is surely weakened," Arash Azizi, who unveiled an alleged plot against the supreme leader, told Newsweek.

DUBAI - Iranian authorities have arrested hundreds of people and executed half a dozen in a sweeping security crackdown that analysts say is aimed at exerting control after a brief but punishing war with Israel exposed Iran’s deep infiltration by Israeli intelligence.

Roxana Saberi felt like she was back behind bars in Tehran. As she watched Israel’s bombing of Evin prison, the notorious detention facility at the core of Iran’s political repression, she shuddered at memories of solitary confinement, relentless interrogation, fabricated espionage charges and a sham trial during her 100-day incarceration in 2009.