to save priceless works many by russian artists. the windows blown out there making it impossible to control the temperature and humidity which is so important inside the galleries so staff and volunteers are removing the works and shelter them. the museum say it is collection remains intact at this hour. ukraine's third largest city expecting an onslaught. nick martin of sky news shows us people are preparing for a fight. >> on the beaches of odesa, preparing to defend themselves. they know the russians aren't far away now. ♪♪ and who could have predicted this? a choir provides a wartime serenade to volunteers. everyone here just wants to