ANALYSIS. Who is behind the deadliest attack ever in modern-day Iran?

The double bombing in the Iranian city of Kerman is the worst the 45-year-old Islamic regime has ever had to swallow. But who committed it has not yet been determined. Many accusing fingers in the country itself point at Israel, which is said to have wanted revenge for Iranian support for Hamas. But there are reasons to question that. Iran has plenty of enemies, so we weigh the options.

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