- the unanimity rule , which, while not making it impossible to take the obvious decisions, makes it very difficult to take binding decisions, with national governments seeking to hold their ground rather than imposing excessive constraints on themselves;
- la règle de l'unanimité qui n'interdit certes pas les décisions apparentes mais qui rend très difficile les décisions contraignantes, les gouvernements cherchant à occuper le terrain sans s'imposer des contraintes excessives.