Protesters have targeted Berlin's State Opera for refusing to cancel Russian opera singer Anna Netrebko's first performance there since the 2022 war. Chanting "shame", they accused the soprano of failing to condemn Vladimir Putin for Russia's invasion of Ukraine. Berlin's mayor, its senator for culture and Ukraine's German ambassador have all criticised the opera for allowing the singer to return to its stage. Ms Netrebko has criticised the war and argues she met Mr Putin a few times. (BBC News)