European Commission President Jean-Claude Juncker said Thursday that the EU could "add wording" to the political declaration only on the purpose of their future relationship.
The May meeting with European leaders takes place in an icy atmosphere after the President of the European Council, Donald Tusk, tweeted that there was a "special place in hell" for people who "promote Brexit" without a plan to run it. His remarks shocked British politicians and was condemned by Brexite scholars.
After meeting Tusk on Thursday, May said that the language he had used in the tweet "was not helpful and was causing great consternation in the UK".
Last month, UK lawmakers voted in favor of May's removal to Brussels in order to renegotiate the terms of the Brexit deal, particularly with regard to concerns over Irish support. The backstop – an insurance policy designed to avoid a hard border between Northern Ireland, which is still part of the UK, and the Republic of Ireland, a member of the EU – has been a particularly thorny issue in the agreement of May, with British politicians they will not support his business without changes.
In a joint statement, May and Juncker described their meeting as "strong but constructive" and stated that they agreed that the UK and the EU should discuss the possibility of finding a solution that would to obtain the widest possible support. " United Kingdom and respect the guidelines adopted by the European Council. "
While she was coming to meet Juncker, May met an anti-Brexit protester who jumped in front of his car while he was holding a poster bearing the words "Do not Crash Out!" The man was quickly intercepted by security.
May said Thursday afternoon that she would present the Brexit "at the hour" and that she would "negotiate fiercely" to guarantee it.
"What I see and hear from the leaders is a willingness on our part to work together to ensure that we can deliver the UK out of the EU with an agreement."
However, there is no doubt that time is running out for the month of May, with only 50 days before Britain's departure from the EU. The country remains on the tip of the knife against Brexit, with Westminster remaining strong and the EU categorically refusing a new renegotiated agreement.
Chances, day by day, of increasingly indicating that the UK is coming off the block without an agreement – which could have catastrophic effects on the supply of food and drugs, companies and traveling.
Defense
tweeted After meeting with May, there was "still no breakthrough" in a Brexit deal and discussions would continue.
CNN's James Frater in Brussels, Arnaud Siad and Seb Shukla contributed to this report.