- Iran may be activating sleeper cells outside the country, alert says abcnews.com
- A Mysterious Code Is Being Broadcast on Shortwave Radio. Is It Iran? The Atlantic
- Is Iran a threat to security in Germany? dw.com
- Germany warned of Iranian sleeper cells after Tehran’s fatwa on West Euronews.com
- US intercepts encrypted message possibly linked to Iranian sleeper cells: Report Anadolu Ajansı
