Belarusian leader and Russian ally Alexander Lukashenko extended his 31-year rule on Monday after electoral officials declared him the winner of a presidential election that Western governments rejected as a sham.

Europe’s longest-serving leader won re-election in a contest widely believe to have been rigged. The result cements the power of a leader whose country is considered Russia’s staunchest ally.

As an East African bloc urged an immediate ceasefire in eastern Democratic Republic of Congo, Rwandan-backed M23 rebels who seized the city of Goma extended their advance on Wednesday, and Congo said it planned a campaign to recover lost territory.