Med ophævelsen af princippet om dobbelt strafbarhed, muligheden for at udlevere en statsborger til en anden stat og den mulighed, som den stat, den anklagede er udleveret til, har for (uden tilladelse fra den udleverende stat) at udlevere vedkommende til et tredjeland uden for EU (en kurder udleveres f.eks. fra Grækenland til Tyskland, som derefter udleverer ham til Tyrkiet uden først at have spurgt Grækenland), ophæver grundlæggende strafferetlige principper.
The abolition of double indemnity, the facility to extradite a national to another state, the facility for the state to which the accused has been extradited to extradite him (without the permission of the state which extradited him in the first place) to a third country which is not a Member State of the European Union (for example, a Kurd is extradited by Greece to Germany, which then extradites him to Turkey without asking Greece) contradict basic principles of criminal law.