Artists rehearse the operetta "Candide," based on the novella by Voltaire with music composed by Leonard Bernstein, and directed by Romanian director Andrei Munteanu at the Ion Dacian National Theatre of Operetta and Musical in Bucharest, Romania, Thursday, Nov. 18, 2021. Theaters in Romania require a COVID-19 green pass for spectators' access, a part of recent regulations to combat the COVID-19 pandemic. (AP Photo/Vadim Ghirda)