Today is Yesterday's Tomorrow - Individual Photographs Covering Russia's invasion of Ukraine

On 24 February 2022 Russia invaded Ukraine in a steep escalation of the Russo-Ukrainian War which had begun in 2014, causing Europe's largest refugee crisis since World War II. The United Nations’ refugee agency says more than six million Ukrainians have been forced to flee their country, estimating 12 million people in total have fled their homes since the invasion, making a quarter of Ukraine’s population and half of the countries children officially displaced.

Most refugees are women, children, and the elderly, or people with disabilities. Male Ukrainian nationals aged 18 to 60 are denied exit from Ukraine as part of mandatory conscription, unless under an exemption.

Most refugees have crossed to the European Union through border points in Poland, Slovakia, Hungary and Romania, where volunteers and governments have scrambled to help them find accommodation and provide support.

Enormous challenges lie ahead, as it becomes clear this will be a protracted conflict, with the US and EU working to address a longer term response for resettling Ukrainians amid a humanitarian crisis that could last years, in what threatens the physical, psychological, and material well-being of all those displaced.