Migrants try to cross the border between Belarus and Poland. The Frontex offices in Warsaw are empty at night. ‘Don’t you think that the borders of empires, like the roots of a tree, are much more extensive than we think?’ 　　[FR] Des migrants tentent de franchir la frontière entre la Biélorussie et la Pologne. La nuit, à Varsovie, les bureaux de Frontex sont vides. “Ne pensez-vou...