KIEV, Dec. 25 – It is impossible for Ukraine both to join the Customs Union and sign the EU-Ukraine Association Agreement, the European Commission said.

In a comment for Interfax-Ukraine about the possible development scenario in case of full or partial integration of Kiev into the Customs Union, a representative of the European Commission explained that Ukraine has to choose whether to bring its legislation in compliance with the EU law or with those regulations those applied in the Customs Union.

"It would not be possible for Ukraine to align to both (technical regulations) at the same time. It is for Ukraine to choose which path to follow, knowing that the Customs Union and the EU-Ukraine Association Agreement are mutually incompatible," the Commission said.