relevant commitment is implemented. They may however be applied beyond the period specified in the first paragraph as long as the relevant commitments have not been fulfilled. In response to progress made by the new Member State concerned in fulfilling its commitments, the Commission may adapt the measures as appropriate. The measures shall be maintained no longer than strictly necessary and, in any case, shall be lifted when the shortcomings are remedied. They may however be applied beyond the period specified in the first paragraph as long as these shortcomings persist. A European law of the Council may extend this period. These measures shall be taken during a period of three years following the date of accession and their application shall be limited to that period. The European