Alexander Lukashenko, Europe’s longest-serving leader, has extended his 31-year rule in Belarus after being declared the winner of a presidential election that his exiled opponents and Western countries have denounced as a sham.

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.

Opposition leader-in-exile Sviatlana Tsikhanouskaya labeled Lukashenko’s successful reelection as “sheer nonsense.” Before Sunday’s vote, she had encouraged voters to cross out every candidate’s name on the ballot.

Alexander Lukashenko was declared the landslide winner of presidential elections in Belarus. His victory was seen as a foregone conclusion in a country he's run for more than 30 years.