Donald Franciszek Tusk is a Polish politician who has been the President of the European Council since 2014. He served as Prime Minister of Poland from 2007 to 2014 and was a co-founder and chairman of the Civic Platform political party.
Boris Johnson says he is "very confident" MPs will back the Brexit deal he has struck with the EU - despite the DUP's opposition to it.
The Prime Minister claimed he would win what is expected to be a knife-edge Commons vote on Saturday.
"This is our chance in the UK as democrats to get Brexit done, and come out on 31 October ," he said.
The DUP is against concessions he made to the EU on customs checks at points of entry into Northern Ireland .
The PM must win support for his deal from Brexiters on his own side, as well as from 23 former Tory MPs who now sit as independents - including last month after they rebelled against him in a bid to prevent a no-deal Brexit.
He said the new agreement "paves the way for a decade of deregulation" and argued it would give the government "licence to slash" worker, environment and consumer protections.
Speaking in Brussels, Mr Johnson denied he would meet the same fate as his predecessor Theresa May , who repeatedly failed to get a Brexit deal through Parliament.
"I Am very confident that when my colleagues in Parliament study this agreement that they will want to vote for it on Saturday and in succeeding days," he said at an EU summit in Brussels.DUP concerns
Appealing to the DUP, which the government relies on for support in key Commons votes, he insisted the UK could leave the EU "as one United Kingdom " and "decide our future together".
Mr Dodds earlier said he expected a "massive vote" against Mr Johnson's deal on Saturday in The House of Commons - and the DUP expected to "play a crucial role" in amending the legislation.
The New Deal is largely the same as The One agreed by Theresa May last Year - But it removes the controversial backstop clause, which critics say could have kept the UK tied indefinitely to EU customs rules.
The DUP said: "This is not acceptable within the internal borders of the United Kingdom . "
The Party also objects to Northern Ireland potentially being part of a different VAT regime to the rest of the UK and is concerned about The Deal violating the Good Friday Agreement's principle of consulting the nationalist and unionist communities on important issues.
European Commission President Jean-Claude Juncker caused a flurry earlier when he said there was no need for a Brexit extension as "we have a deal".
This was seen as a major boost for Mr Johnson, who has always insisted he would not go beyond 31 October - even if he was forced to ask for an extension under the terms of the so-called Benn Act, which kicks in on Saturday if MPs vote his deal down.
Mr Tusk said: "On a more personal note, what I feel today, frankly speaking, is sadness, because in my heart I will always be a Remainer, and I hope that our British friends decide to return One Day , our door will always be open. "Can Boris Johnson win the vote?
There are currently 287 voting Conservative MPs. The Prime Minister needs to limit any rebellion among them.
That's still not quite enough, though, so the PM will also need the backing of some Labour MPs and ex-Labour independents. In March, when MPs voted on Theresa May 's deal for the third time, five Labour MPs backed it, plus two ex-Labour independents.
This Time it's likely to be a bit higher than that because several MPs have said they would now back a deal.
All this still leaves the vote very close. And it's possible some MPs could abstain, Making It even harder to predict the outcome.
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