This study investigated the prevalence and predictors of mental health issues, specifically anxiety, depression, and stress, among 706 Ukrainians from different age groups and regions, both men and women, in the midst of the military conflict with Russia. The survey was conducted six months after the conflict began, from August to October 2022. The results showed that a significant portion of the Ukrainian population experiences anxiety, depression, and stress due to the war. Younger people were more resilient. Women were found to be more vulnerable to mental health issues than men. Ukrainians who fled to other countries experienced higher levels of anxiety, depression, and stress. Financial and employment statuses were shown to predict increased anxiety, while direct and other trauma exposure increased anxiety and depression, or acute stress.