LKS 20220316 NIM; A Ukrainian evacuee Irina Moroz holds a dog in her jacket as she walks at the Ukrainian-Romanian border in Siret, northern Romania, 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. LEHTIKUVA / AFP Armend Nimani