"The certification phase is not a political issue," Interfax quotes Buchner.
He stressed that Nord Stream 2 is a project in which "many investors from other countries are involved."
Earlier, the press secretary of the Russian President Dmitry Peskov announced the continuation of the certification process for Nord Stream 2 in Germany.
On December 16, it became known that the German regulator suspended the certification of Nord Stream 2 AG as an independent operator of the Nord Stream 2 pipeline.
Permanent Representative of Russia to the European Union Vladimir Chizhov called the decision of the German regulator to postpone the certification of Nord Stream 2 as political.
On November 16, it became known that Nord Stream 2 AG decided to establish a subsidiary in Germany in order to meet the country's requirements for certification of the German section of the pipeline.