Former German Chancellor Gerhard Schroeder and German businessman Matthias Warnig have announced their resignations from the board of directors of Russian state-owned oil giant Rosneft, the company said.
Schroeder, chairman of Rosneft's board since 2007, and Warnig said it was impossible for them to extend their mandates on the board, Rosneft said in a statement, giving no further details.
A longtime friend of Russian President Vladimir Putin, Schroeder has come under increasing international pressure since Moscow launched its invasion of Ukraine in February.
Schroeder, a member of the Social Democratic Party (SPD), was German chancellor from 1998 to 2005. He has faced fierce criticism in Germany for years over his work for state-controlled Russian energy companies.
Schroeder also has worked for Gazprom and holds leading positions in the Nord Stream and Nord Stream 2 natural gas Baltic Sea pipelines for the delivery of Russian gas.
Warnig is also managing director of Nord Stream 2, which has been completed but its operations were switched off following Moscow's invasion. He was included on the U.S. sanctions list after the invasion.
Schroder's decision to step down from the board of Rosneft comes after he had his right to an office at the German parliament in Berlin removed. He is also facing calls to be sanctioned from the European Parliament.
Germany's current chancellor, Olaf Scholz of the SPD, has urged Schroeder to leave the party.
Scholz on May 20 backed the German parliament decision to shut down Schroeder's office and renewed a call for the ex-chancellor to give up all his Russian energy posts.