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.

In the wake of Israel’s attacks, Iran has brought in new laws, issued a surge of death penalties on the spot and arrested people for ‘suspicious movement’ to control society, suppress dissent, and escape its own crisis of legitimacy,