Jeremy Corbyn has called on the next Tory leader to hold another referendum before he leaves Britain for the EU, saying Labor will stay advertise.
Corbyn said the party will take this position to stop "no deal or damaging Tory Brexit".
But he does not say what he would do if he won a parliamentary election and was charged with the Brexit process.
Some high-ranking members of his team want him to take a pro-remain stance in all circumstances.
In an interview with John Pienaar of the BBC, Corbyn said Labor is now the "party of choice" when it comes to Brexit.
He said he had done "what a leader should do in my opinion … listen to a great deal" ̵
He said he would "file a lawsuit" before the House in September for another referendum, and in the meantime, "Labor" will do anything to stop a deal or a damaging Art Hunt deal or Johnson to stop suggesting ".
Asked if he changed his position due to pressure from colleagues, Mr. Corbyn said, "Not a bit of it, I listened and I enjoyed it."
Mr. Corbyn said he could not say what position Labor would take in a general election, but I would decide it "very quickly," depending on the circumstances at the time, whenever one was called.
In a letter to members, he said Labor continues to believe The "compromise plan" set for Brexit in cross-party talks with the government earlier this year was a "viable alternative that could bring the country together."
These included a customs union, a strong internal market relationship and the protection of environmental laws and regulations at work.
- Can not he be the next leader by a consensual Brexit?
- What is a "no deal"?
Corbyn's statement followed a Shadow Cabinet meeting on Tuesday morning and a meeting with union leaders on Monday.
The leaders of Labor's five largest affiliates called for the party's move – but also to hold a "confirmatory vote" on any new deal being negotiated if Labor wins a parliamentary election.
The BBC's political correspondent, Iain Watson, said there was some controversy over the second part of the unions' stance in the Shadow Cabinet. The vice chairman, Tom Watson, wanted a "direct stance," which meant a decision was made. "
The vice chairman is among the leading figures who have argued that the confusion over Labor's message to Brexit on his
Other Labor MEPs have warned that support for a new referendum could cost the party's votes in areas where holidays are being advocated.
Mr Watson said that he is "satisfied" with the new Brexit position "to vote", but that the party must "cross this bridge" when it comes to its manifest for the next election.
"Our members have been with us since He told me that we should be a remnant party and that we should offer the new business to the people, "he added  "We will now stand up for this and I am very proud that the Shadow Cabinet has now listened to their concerns."
Clive Lewis, Secretary of Shadow Fund, said that if an early election were called, Labor would try to renegotiate the Brexit agreement agreed by Theresa May, though she says "looks very much like it". Labor is now Remain's party.
He told the BBC to Politics Live: "If we win this general election, we will come to power and if we can renegotiate this deal – a Labor deal – we will do it, because that's why asked people. "
But when asked if he was going to campaign for his own party's deal in a referendum, he said," No, I would not. "t.
Halfway to Remain
Analysis by Norman Smith, Deputy Political Editor of the BBC
This move is another shift from Labor to becoming an open party to this Parliament
But after that we still do not know.
Jeremy Corbyn does not say what would happen if, for example, Boris Johnson became chairman and held a new election.
We have clarity before a new election, but no real clarity after a new election
However, this is, as expected, another definitive step by Labor on its way to becoming a Remain party.
They are half way – even if they are a little older than six and one
Former Labor MP Chris Leslie – who left the party to start remain-backing Change UK – said Corbyn's attitude has confirmed that one is Brexit gets if you choose Labor.
He said the position was "not good enough" and added, "Brexit – whether a Labor Brexit or a conservative Brexit – will cost people's jobs, endanger companies and degrade Britain in the eyes of our neighbors
"Corbyn's refusal to be honest about this is a profound betrayal of the people formerly represented by Labor.
The Brexit Liberal Democrat spoke person, Tom Brake, said Labor "are still a party to Brexit."
He added, "Jeremy Corbyn can pretend that he wants the Labor Party finally It supports Liberal Democrat referendum politics, but it is clear that he still intends to negotiate a damaging Brexit deal when he gets the key to # 10.
But Miriam Mirwitch, chairwoman of Young Labor, welcomed the move and added, "This crucial shift shows that Labor is a real challenge. A party centered on democracy that has been listening to what has been going on for some time wished their members to vote: a referendum in which Labor chooses to stay. "
Labor's position on Brexit
June 2017 – Labor's election manifesto accepts a referendum outcome
September 28, 2018 – The Labor Party agrees that if a parliamentary election is not possible is, "all options must be supported … including the campaign for a public vote"
November 2018 – Shadow Chancellor John McDonnell says L abour will "inevitably" support a second referendum, if not manages to reach general elections
January 16, 2019 – 71 Labor MPs say they support a public vote
February 6, 2019 – Mr. Corbyn writes a letter to Ms. May, in which he seeks to make five changes to her Brexit policy without mentioning a "referendum."
February 25, 2019 – Labor says it's a public vote support is proposed if their Brexit deal is rejected
March 14, 2019 – Labor orders its deputies to abstain from a change calling for a second referendum.
March 27, 2019 – The party appoints its deputies to back Margaret Beckett's amendment calling for an affirmative public vote on every Brexit deal
April 30, 2019 – NEC agrees that under certain circumstances, the European election manifesto
will be commuted to another referendum on July 9, 2019 – Labor calls for the next PM to hold a referendum and pledge to counter Remain against " No Deal or a Harmful Tory Brexit "to Fight