170If it proves impracticable to interpret an agreement concluded prior to a Member State's accession to the European Union in such a way that it is consistent with Community law then, within the framework of Article 307 EC, it is open to that State to take the appropriate steps, while, however, remaining obliged to eliminate any incompatibilities existing between the earlier agreement and the Treaty. If that Member State encounters difficulties which make adjustment of an agreement impossible, an obligation to denounce that agreement cannot therefore be excluded (see Commission v Portugal, paragraph 58).
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