Hillary Clinton promised a British audience Tuesday that she will not again seek to be a candidate for president of the United States. In a BBC interview on “Woman’s Hour,” the failed 2016 Democratic presidential candidate declared, “No, I’m not going to run again.” Clinton made the remarks in response to a tweet from the man she lost to in that election. President Donald Trump expressed his hopes for a rematch in 2020 in a Tuesday morning comment.

But, as CNBC reports, while the former Secretary of State is standing-down her presidential ambitions, she said she plans to continue to be a “voice” opposing Trump.

“I think I’m in a position where my voice will actually be magnified because I am not running (for office), and there’s a very good basis, as we watch Trump’s support shrink, that people will say, ‘Well, what she said was right and now where do we go from here?'” she told the BBC.

“I’m trying to make the case about what we need to do so that what happened in my election doesn’t happen again,” she said. “But I’ll also be raising money and support for candidates and causes I believe in. And I’ll be supporting the Democratic Party in the elections this year, next year and 2020.”

Clinton is in the U.K. as part of her now world tour to promote her book “What Happened.” She has made a series of accusations against Trump over the past few days including a statement Sunday night that she is “worried” that Trump will start a nuclear war.

She also reiterated how she believed she couldn’t lose the 2016 election to Trump.

“I thought I was going to win, I thought I’d have the awesome responsibility and great honor of being the first woman president,” she said.

“I had not worked on a concession speech, I had worked on a speech celebrating a victory. … And it all came crashing down,” she said.

Follow David on Twitter