article_snippet.sent: The European Union launched a .
article_snippet.sent: The Commission's investigation, opened in September 2012, . had initially covered Poland, the Czech Republic, Slovakia, .
article_snippet.sent: Noting the investigation had begun before Russia annexed .
article_snippet.sent: After EU EU adopted the so-called third energy package... there have been attempts, and attempts continue now, to retrospectively, retroactively apply those requirements to old contracts as well.
article_snippet.sent: construction, the commissioner said.
article_snippet.sent: It has been under investigation since September 2012, . including for hampering the flow of gas across Europe.