Mr Assange condemned reports that he tried to help Donald Trump win the US Presidency.
The Wikileaks founder said viewers ought to blame Hillary Clinton, not him, for what was revealed in his notorious leaks during the campaign season.
He also said that the "ball was in America's court" when asked whether he will ever leave the Ecuadorian embassy.
Assange has been living in Ecuadorean embassy in London for the past four years
Mr Assange has been living in the embassy in London for the past four years, avoiding an attempt by Sweden to extradite him over sex attack allegations.
Contrary to allegations that he was biased against Mrs Clinton's candidacy, Mr Assange told Peston on Sunday: "I did not have a position in relation to Clinton.
"Yes, we suffered under Obama and Clinton, who engaged in an epidemic against sources, prosecuting three times as many journalists as all previous presidencies combined.
"But we merely exposed the truth behind the candidates."
He added: "If he is hostile to their accuracy, we understand that. He can complain about that. That's okay."
Mr Assange refused to deny that Russians fed Wikileaks the information on Mrs Clinton
The Wikileaks founder said viewers ought to blame Hillary Clinton, not him, for what was revealed
We suffered under Obama and Clinton
He went on to reject allegations that he helped Donald Trump and Vladimir Putin through his leaks during the campaign season.
Mr Assange said: "Let's look at the actual allegations.
"Wikileaks published the authentic words of Hillary Clinton and her campaign staff.
"We revealed what she said in secret to Goldman Sachs and the way she rigged the election against Bernie Sanders.
"We showed this. It was a matter for the American people whether they liked that or not.
"It's a matter Clinton and her campaign staff what they choose to do and what they choose to say."
Assange went on to reject allegations that he helped Donald Trump
Despite Mr Peston's questions, Mr Assange refused to deny that Russians fed Wikileaks the information on Mrs Clinton.
However, he also said that there was a "complete lack of understanding of Wikileaks" from the outside world.
As for his future, the Wikileaks leader confirmed the "ball was in the US court" over his pledge to leave the embassy following the decision to release whistleblower Chelsea Manning.
He added: “We have approached the DoJ, saying are they going to drop this case?
"We say it's unconstitutional, it is unlawful, that it should not be pursued. What are they going to do?
"We haven’t heard back from the DoJ yet, the ball is in their court."