US President Donald Trump has pardoned former campaign manager Paul Manafort, ex-adviser Roger Stone and the father of Mr Trump’s son-in-law.

Manafort was convicted in 2018 in an investigation into alleged Russian meddling in the 2016 US election.

Trump has previously commuted the prison sentence of Stone, who was convicted of lying to Congress. They are among 29 people to benefit from Mr Trump’s latest pardons before he leaves office next month.

Twenty-six of them won full pardons on Wednesday night, while another three received commutations. A commutation usually takes the form of a reduced prison term, but does not erase the conviction or imply innocence.

A pardon is an expression of the president’s forgiveness that confers extra privileges such as restoring the convict’s right to vote.

Presidents often grant pardons in the final days of office, and Mr Trump has used the power less than any president in modern history apart from George HW Bush.

Notably absent from Mr Trump’s wave of Christmas pardons are two other figures who were convicted in the Mueller probe: Manafort’s deputy, Rick Gates, and former Trump lawyer Michael Cohen.

Both men co-operated extensively with prosecutors. Cohen, who was released from prison in May over coronavirus concerns, took to Twitter to vent about the pardons. “What happened tonight shows how broken the whole criminal justice system is,” he tweeted.