Cover image: picture alliance / SIPA | Bozic / CROPIX When the 13 EU member states of the Three Seas Initiative (3SI), their strategic partners and associate countries, gathered in Dubrovnik in April to mark the grouping’s tenth anniversary, they had reason to be proud of what they had built. The 3SI group of countries stretch between the Adriatic, Baltic and Black Seas and come together to improve north–south connectivity in energy, transport a…