Ukrainians board the Kherson-Kyiv train at the Kherson railway station, southern Ukraine.

Video. Ukraine’s residents board trains to escape ‘life-threatening’ winter

Ukrainian authorities began evacuating civilians from recently liberated parts of the Kherson and Mykolaiv regions, fearing lack of heat, power and water will make winter extremely difficult.

Ukrainian authorities began evacuating civilians from recently liberated parts of the Kherson and Mykolaiv regions, fearing lack of heat, power and water will make winter extremely difficult.

The World Health Organization has warned that millions face a "life-threatening" season in Ukraine.

Authorities have urged residents of the two southern regions, which Russian forces have been shelling for months, to move to safer areas in the central and western parts of the country.