May is battling to persuade lawmakers to support the divorce agreement she has sealed with the European Union when the House of Commons votes on December 11.
She said: "We can shut our eyes to these hard truths and carry on debating between these extremes for months to come, or accept that the only solution that will endure is one that addresses the concerns of those who voted Leave, while reassuring those who voted Remain".
With a crucial vote on the Brexit deal looming on December 11, what does it all mean for the Prime Minister's authority?
Theresa May bowed to demands to publish the "final and full" legal advice on her Brexit deal after suffering a humiliating Commons defeat.
Attorney General Geoffrey Cox sets out the legal advice to MPs in the House of Commns, central London on the EU Withdrawal Agreement.
The full legal advice given to ministers is understood to run to several thousand pages.
Conservative House leader Andrea Leadsom told MPs that May's government had a right to receive confidential opinions that were unhampered by political considerations.
Some 26 Tory MPs - including former ministers Sir Michael Fallon, Damian Green and Sir Oliver Letwin - rebelled on the amendment tabled by ex-attorney general Dominic Grieve.
British Prime Minister Theresa May is putting the fate of her Brexit deal in Parliament's hands, saying lawmakers must back it to deliver on voters' 2016 decision to leave the European Union and "create a new role for our country in the world".
"The British people want us to get on with a deal that honours the referendum and allows us to come together again as a country, whichever way we voted", May will say, according to comments released by her Downing Street office.
That result - which could prevent a "no deal" Brexit - saw the pound rise back to where it started the day, rounding off a rollercoaster day for sterling.
- The BBC dropped proposals for a TV debate featuring Mrs May and Labour leader Jeremy Corbyn followed by a discussion between eight panellists including politicians from different sides of the Brexit argument.
The amendment gives MPs the power to instruct the government what action to take if May's Brexit deal is, as expected, voted down in Parliament.
Advocate General Campos Sanchez-Bordona stated that Britain could halt the entire process without the agreement of other European Union countries.
The guidance is not binding on the Luxembourg court, which is considering the issue in response to a request from British parliamentarians.
The row is unlikely to have any impact on the course of Brexit.
"This is a huge win for us, and a huge step forward from the highest court in the business, and confirms what we have been hoping for: that the United Kingdom can indeed change its mind on Brexit and revoke Article 50, unilaterally", he said.
Hardline Conservative Brexiteers say May's compromise deal does not represent enough of a break with Brussels. Rejecting it would leave the United Kingdom facing the prospect of a chaotic "no-deal" Brexit, but May's chances of winning majority backing for the deal appear slim.