The British premier plans to meet EU leaders Jean-Claude Juncker and Donald Tusk, even though European diplomats insist the agreement is finished and ready for EU leaders to approve on Sunday. Sánchez had warned that he would snub Sunday's Brexit summit unless he had written and public assurances from Downing Street that Spain would have a crucial say in Gibraltar's future.
Spanish Prime Minister Pedro Sanchez previously expressed concerns about the future of Gibraltar, the British territory of less than 3 square miles on Spain's southern coast.
"I should mention in passing, and just between us, that some colleagues are unkindly suggesting that this award is a sign, for those who understand these things, of absolute desperation by a Government which has effectively abandoned Brexit and now clearly lost the support of the DUP and many of its own backbenchers, to the extent that it is now reduced to handing out knighthoods to malleable colleagues, in a doomed attempt to stave off an nearly certain defeat on the meaningful vote prior to Christmas".
"If there's an agreement, we'll obviously go".
Gibraltar was ceded to Britain in 1713 under the Treaty of Utrecht, but it is still claimed by Spain.
Sanchez previously said Spain would vote against the deal as it is unhappy with its section on Gibraltar's future relations with the EU.
According to Tusk's invitation, the withdrawal agreement protects citizens' rights and the Northern Ireland peace process, while ensuring Britain will keep paying European Union dues during a transition period.
A Spanish government official said the dispute over Gibraltar could be resolved by modifying a single clause in the divorce agreement - though both Britain and the European Union have said the agreement won't be amended. "That is what the Spanish government has repeatedly sort but they have not achieved that".
In the days before the summit, some states raised objections regarding the content of the withdrawal agreement, including over the issue of fishing rights in the UK's territorial waters post-Brexit.
May also conceded that MPs have the power to stop Brexit through a final say referendum, although she said it was not something she was considering.
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Even as their lead disappeared and their shots (and free throws) stopped falling in a wild atmosphere, the Bulldogs did not panic. The Buckeyes shot just 37.5 percent from the field in the first half while Samford shot 50 percent and led 32-29 at the break.
"We've worked very hard and have in fact reached agreement with Spanish colleagues in respect of Gibraltar's role in the withdrawal process", Gibraltar's Chief Minister Fabian Picardo said on Friday.
"It is critical that the United Kingdom remains firm in defence of our right to self-determination and that Spain is given no hope, absolutely no hope, in its campaign to take our sovereignty from us", she said.
Chancellor Angela Merkel's spokesman said Germany believed outstanding questions would be cleared up in time for Sunday's summit to go ahead. But it is another concession that British Prime Minister Theresa May has made in order to secure a deal ahead of Britain's departure from the E.U.in March.
Shadow cabinet office minister Chris Matheson said: "It would be a spectacular act of desperation for Theresa May to be giving away knighthoods in a bid to win votes for her botched Brexit deal".
"This is the deal that I think works for the United Kingdom", she said.
'I said the the sky won't fall in.
I want that to be a moment of renewal and reconciliation for our whole country.
She warned that rejecting the deal would lead to "more uncertainty and more division" and could result in Britain crashing out of the bloc without agreement - an outcome feared by many businesses.
Sanchez said it meant "the relationship between Gibraltar and the European Union - political, legal and geographical relationship - will go through Spain". "I don't think (the EU) are going to come to us and say, 'We'll give you a better deal,"' she added.