Sir Vince Cable has said he does not understand objection to a second EU referendum, claiming it is important that the public "verify" their stance on Brexit.
The Liberal Democrat leader said the world was "different" and the country more "divided" since the first vote took place in 2016.
"I see no reason why asking people again is a problem, and if people are as convinced as you say they are, they'll have no problem voting for what they voted for last time," Sir Vince told talkRADIO's Julia Hartley-Brewer.
"We are in a very different world in which the country is very badly divided. Parliament is paralysed."
He continued: "It is important that the public verify it, which they haven't."
His appearance on the breakfast show followed the news that Labour have tabled a cross-party motion that could block a no-deal Brexit.
The move would hand control of the Commons agenda to MPs on June 25, and introduce legislation that day to stop a no deal from occurring at the end of October.
"The only way of reestablishing trust is to give the public the choice of which of these various options they want," Sir Vince continued.
"The no deal option, which is pretty radical, should be one of the options. I'm not afraid of confronting this in a democratic debate."