"Indeed it is astonishing that anyone could suggest dispensing with that vital tool in the negotiation".
Frontrunner Boris Johnson and Home Secretary Sajid Javid were the final two of the 10 candidates to launch their campaigns, as the battle for Number 10 intensifies.
However, Labour is proposing to table a cross-party motion on Wednesday which would give them control of parliamentary business for a day on June 25th, which would be used to pass votes effectively blocking plans for a no-deal scenario.
It was rejected by 11 votes - 309 to 298.
Conservative Party leadership candidate Boris Johnson gestures during the launch of his campaign in London, Britain.
The remaining five candidates - Matt Hancock, Rory Stewart, Andrea Leadsom, Mark Harper and Esther McVey - are hoping to make it through and to build momentum.
One of Mr Johnson's supporters, Theresa Villiers, told Sky News: "This isn't about selecting a leader of the opposition where you have time to develop them, this is about the prime minister, so the normal rules in the leadership where an unknown comes through will not happen here".
The EU has insisted repeatedly that it will not renegotiate the terms of the divorce, while parliament has previously voted against leaving without an accord.
He has kept a low profile in the race to succeed Theresa May so far, his only significant intervention being a pledge - immediately criticised by his rivals - to cut income tax bills for people earning more than £50,000 a year.
Oil steadies above $62 as OPEC cuts counter growth concerns
EDT (2030 GMT), that is expected to show inventories fell 500,000 barrels last week from almost two-year highs. Yesterday's bullish attempt has met a swift response and the oil price powerfully reversed lower.
Despite his shortcomings, Johnson is "the only Conservative" who can deliver on Brexit, Galloway believes, arguing that "none of the other Conservatives measure up".
With this, he continued to underline the importance of the domestic agenda which has been missing under May, saying that, he would govern from "Brexit and beyond", and outlined that the Conservatives would not win the next election on Brexit alone. "Delay means defeat, delay means ruin".
May will then step down as prime minister and the new leader of the largest party in parliament will be appointed as PM by Queen Elizabeth II.
Gareth Snell said he should have backed the agreement when it was put before the Commons for a third time, adding he would support a deal in future.
Brexiteers such as Dominic Raab and Esther McVey have said the priority must be honouring the 2016 referendum result and the United Kingdom should be prepared to accept no deal.
Campaigners for a second Brexit referendum are planning another mass protest in London ahead of the date on which Britain is due to leave the European Union in October as the leading candidates to be the next prime minister say they will leave without a trade deal.
Labour leader Jeremy Corbyn has said a no-deal Brexit would be "disastrous", telling MPs: "I think some of [the PM's] colleagues need reminding of that".
Mr Johnson apologised for "the offence I have caused", but said: "I will continue to speak as directly as I can". "Kick the can and we kick the bucket", he added. Also on the programme - a question of gender and sex.
In a pitch created to appeal to 160,000 Conservative Party members, Mr Javid said the problem with much of the Westminster elite was that they had "always been insiders, never had to fight like the rest of us just to get their foot in the door".