opera announcing the death of one of its performers, artists turned soldier rostislav ian kishan killed in battle protecting ukraine s future. they said he joined the armed forces on the first day of the war. cnn visited last july. he had long left for the front. like many of the dancers there those that stayed behind like katarina col. cheng co braving the stage to give odessa a sense of normalcy, dancing in defiance , but very much still struggling. i want the whole world to stop this horror so that innocent people and children stopped dying, catarina says. i asked for help and for people not to remain silent. it s silence is how they began rehearsals this friday amid tears one minute of silence for one of their own. ben wedeman, cnn kiev. ukraine s tank forces