“I cleaned the stables and pulled weeds for free.” How women from Ukraine became the most vulnerable social group in the EU According to the UN High Commissioner for Refugees, more than 5.6 million people have fled Ukraine since February 24 and ended up in 44 European countries. This is the biggest migration crisis in the EU since World War II. 90% of refugees are women and children. Some left home in a hurry, without mobile phones, money or documents.