OPAL pipeline

Denmark has invited the Russian-controlled operator of the Nord Stream 2 pipeline to help recover a mystery object that was spotted near the pipeline, six months after sections were sabotaged.

Russian Energy Minister Alexander Novak and EU Energy Commissioner Guenther Oettinger will meet in Moscow on August 29, Russia's Energy Ministry said.

Bulgaria and other EU members are being pressured into pulling out of the South Stream pipeline, Russian Economy Minister Alexander Novak said.

In a speech held at the 21st World Petroleum Congress in Moscow, he argued the EU had taken "a tough stance" on the exploitation of trans-border infrastructural projects "with Russian participation".