TAREK AMARA and ANGUS MCDOWALL TUNISIAN anti-terrorism police summoned the country's main opposition figure for questioning on Friday, as a political crisis deepens in the wake of President Kais Saied's move to dissolve parliament and impose one-man rule. Rached Ghannouchi, head of the Islamist Ennahda party and speaker of the dissolved parliament, was summoned to appear later on Friday, his office said, after investigations were opened into other members of the chamber who had defied Saied. Saied demanded that investigations be carried out after members of parliament held an online session on Wednesday and voted to revoke all the emergency…