Open this photo in gallery: Irwin Cotler has been on Tehran's radar for his global campaign since 2008 to list Iran's Islamic Revolutionary Guard Corps as a terrorist entity.Adrian Wyld/The Canadian Press Former Liberal justice minister Irwin Cotler, who is on an Iranian hit list, says he fears Tehran may have activated sleeper cells in Canada to carry out acts of violence against opponents of the regime. Mr. Cotler, a noted Canadian human-rights advocate and critic of the Iranian clerical regime, would not discuss his personal security situation since war broke out between Israel and Iran on June 12. The...