Sergei Tikhanovsky, the husband of Belarus' opposition leader, has called on US President Donald Trump to "just say the word" and ask for all political prisoners in Belarus to be released.

A leading Belarusian opposition figure, freed from prison by President Alexander Lukashenko, said on Sunday his wife would continue to lead the exiled movement, and urged supporters to keep fighting for change and the release of political prisoners.

Belarus opposition figure Sergei Tikhanovsky, who was released following an appeal from the White House, said Sunday that US President Donald Trump could secure the freedom of all Belarusian