Authorities arrested, detained, and harassed some of Iran’s most celebrated rights lawyers, and stepped up their assault on critical journalists, bloggers, and their families in 2012, HumanRightsWatchsaidtodayinitsWorld Report 2013.The government also prevented reformists and opposition leaders from participating in parliamentary elections, and is holding the opposition leaders Mir Hossein Mousavi, Mehdi Karroubi, and Zahra Rahnavard under house arrest as Iran prepares for its presidential election in June 2013.