Women ask for directions after crossing the Ukrainian-Polish border, at the Medyka border crossing, southeastern Poland on March 16, 2022. - More than three million people have fled Ukraine since the start of the invasion, the UN migration agency IOM says. Around half are minors, says the UN children's agency. The UN refugee agency, UNHCR, says 1.8 million people have fled to Poland. (Photo by Louisa GOULIAMAKI / AFP)