A Tunisian judge ordered opposition leader Rached Ghannouchi to be detained before his trial on charges of plotting against state security, his lawyer said, the latest move on opponents of President Kais Saied. The 81-year-old head of the Islamist Ennahda party was the speaker of the elected parliament, which was shut down in 2021 by Saied when he seized all powers. Ghannouchi, who was arrested on Monday, was ordered detained following an investigation by the judge that lasted eight hours, lawyer Monia Bouali said. No date has been set for any trial or the next hearing. "The issue is related to…