NEARLY one million Ukrainian refugees live in Poland, 41% of them school-age children. Two years after Russia launched its attempted full-scale invasion of Ukraine, they are facing destabilising and pressing questions: How much of a new life should they build; and when – if ever – will they be able to return home?  The war has settled into a grinding stalemate in eastern and southern Ukraine, punctuated by periodic Russian missile barrages throughout the country. Out of a population of around 37 million, some 14.6 million people are estimated to be in need of humanitarian assistance and 3.7 million are internally displaced. Another 6.5 million Ukrainian refugees have been…