'His relationship with alt-right'

Matthew Continetti is a fellow at the American Enterprise Institute, focusing on the development of the Republican Party and the American conservative movement.

What's Trump's key legacy?

Donald Trump will be remembered as the first president to be impeached twice. He fed the myth that the election was stolen, summoned his supporters to Washington to protest the certification of the Electoral College vote, told them that only through strength could they take back their country, and stood by as they stormed the US Capitol and interfered in the operation of constitutional government.

When historians write about his presidency, they will do so through the lens of the riot.

They will focus on Trump's tortured relationship with the alt-right, his atrocious handling of the deadly Charlottesville protest in 2017, the rise in violent right-wing extremism during his tenure in office, and the viral spread of malevolent conspiracy theories that he encouraged.

What else stands out to you?

If Donald Trump had followed the example of his predecessors and conceded power graciously and peacefully, he would have been remembered as a disruptive but consequential populist leader.

'A surrender of global leadership'

Laura Belmonte is a history professor and dean of the Virginia Tech College of Liberal Arts and Human Sciences. She is a foreign relations specialist and author of books on cultural diplomacy.

What's Trump's key legacy?

His attempt to surrender global leadership and replace it with a more inward-looking, fortress-like mentality. I don't think it succeeded, but the question is how profound has the damage to America's international reputation been - and that remains to be seen.

The moment I found jaw-dropping was the press conference he had with Vladimir Putin in 2018 in Helsinki, where he took Putin's side over US intelligence in regard to Russian interference in the election.