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.

Alexander Lukashenko, who has ruled the ex-Soviet state for 31 years, held a four-hour press conference musing that some of his opponents "chose prison", after winning 88 per cent of the vote.

Britain and Canada have imposed sanctions targeting the regime of Belarus' dictator president, Alexander Lukashenko, following his disputed election over the weekend to a seventh term.