The Russian invasion of Ukraine on 24th February 2022 has prompted this article to summarise some of the salient mental health issues experienced by young asylum seekers and refugees focussing on resettlement countries, drawing on the substantial literature, for Child and Adolescent Mental Health Practitioners. Firstly, the various UNHCR categories of persons affected by war and persecution and statistics are described. By July 2022, over 100 million people globally were of concern to UNHCR, a number increased by the many millions of refugees fleeing Ukraine to neighbouring countries. Selected findings on the psychiatric epidemiology of young refugees are summarised, and some principles of Child and Adolescent Mental Health Service delivery and treatments are outlined. The research on Ukrainian refugees’ mental health is limited and this is an area that requires further investigation alongside active attempts to meet their mental health needs.