I think it is imperative that we now go back to the people and check that they are content to proceed on this extraordinary basis.
"We will be - instead of in Europe but not run by Europe, we will be out of Europe and yet wholly subject to European rules".
Boris Johnson, a leading supporter of Brexit who quit as foreign secretary in July, praised his brother's decision, saying they were "united in dismay" - despite their opposing views on Brexit - over May's handling of the negotiations.More news: Kim Kardashian shares images while fleeing massive California wildfire
"But it has become increasingly clear to me that the Withdrawal Agreement, which is being finalised in Brussels and Whitehall even as I write, will be a awful mistake".
Cabinet ministers have been visiting 10 Downing St this week to see details of the government's plan for the "divorce deal" and subsequent trading and customs relationship with the EU.
He added voters had been offered two choices which represented "no choice at all".
Lib Dem leader Sir Vince Cable, whose party supports calls for a "People's Vote" on the final deal, said: "We warmly welcome Jo Johnson's support of the campaign to give the people the final say on the deal and a chance to exit from Brexit".
Johnson, backed the Remain side during the referendum said it would be "a travesty" not to have a second referendum.More news: Sears Closing 40 More Stores Early Next Year
In his 1,600-word resignation statement, Johnson said May's proposed deal would leave Britain in a "far worse" negotiating position than now, adding he also knew from his work at the Department of Transport how painful a "no deal" Brexit would be.
He labelled Theresa May's Brexit plans as "delusional" and said they put the country at the brink of the greatest crisis since World War Two.
The terms Theresa May appears to have struck with Brussels would lead to Britain becoming a "vassalage state", Johnson said, or would lead to the United Kingdom crashing out on WTO rules on the other hand. "We will not under any circumstances have a second referendum".
"I think that MPs, MEPs too. will be looking at what that deal says", the Cabinet Office minister said. The proposed terms will be the opposite of what they wanted - taking control from the European Union over what happens in their own country.
They also suggested he had been privately supporting the work of anti-Brexit campaign group, People's Vote, "for some time" despite being a government minister. "He has resigned on an issue of principle putting the country before his party and his own career".More news: Rays, Mariners Finalizing Trade Centered Around Mike Zunino