Lviv diary: ballet, bomb shelters – and everyone loves Boris

It is a glorious spring evening in Lviv and what could be better than a ballet gala at one of Europe’s grandest opera houses? The performance starts with an unusual announcement. In the event of an air raid siren, all spectators must go to the bomb shelter. The red-velvet seats are less than a third full – not for fear of going to a ballet in a war in which Russians have bombed a theatre, but because they can sell only 300 tickets since that is the bunker’s capacity.