Ghazi Chaouachi, head of a Tunisian opposition party and prominent critic of President Kais Saied, will be questioned by a judge on Thursday over a radio interview accusing Saied of expanding his authoritarian tendency. Chaouachi, a former government minister, said on local radio in May that Prime Minister Najla Bouden, whom Saied appointed in September 2021, had resigned but that Saied had not accepted it. Bouden later denied having resigned and Saied demanded a prosecutor confront rumours he said were undermining stability. On Wednesday, a judge summoned Chaouachi to answer suspicions of dis…