“There are mysteries that need to be cleared up in Warsaw rather than in Luxembourg”, the French Minister for the Economy, Bruno Le Maire, said, visibly irritated, at the post-Ecofin Council press conference on Tuesday 5 April 2022. Poland’s refusal to approve the French Presidency’s latest compromise proposal, which incorporates the OECD agreement reforming the taxation of large companies (pillar II) into EU law, has blocked any unanimous political agreement in the EU Council.