Four days before Christmas, when many Slovaks were absorbed in wrapping up their preparations for the holidays and buying last-minute presents, Vasyl Alekseev was standing on a small stage and belting out one Christmas carol after another. During a charity concert for Ukrainian refugees, held in a cosy hall of the Ukrainian-Slovak House in Bratislava, he was singing “Let It Snow” and “Jingle Bells”, popular English Christmas songs, as well as Slovak and Ukrainian carols such as “Šťastné A Veselé” (Merry Christmas) and “Nova Radisť Stala” (A New Joy Has Come), while Saint Nicolas was giving can…