KIEV, Nov. 10 – President Petro Poroshenko and European Commissioner on European Neighborhood Policy and Enlargement Johannes Hahn during a telephone conversation discussed strengthening energy security in Europe.

"The head of state stressed that the European Commission's decision to expand Gazprom's access to the OPAL gas pipeline goes against to the spirit of the Association Agreement between Ukraine and the EU and the Energy Community Treaty," reads a statement posted on the website of the Ukrainian president on Thursday evening.