Click For Photo: https://ichef.bbci.co.uk/news/1024/branded_news/0FCB/production/_104734040_77beee7a-8331-4c37-a3fd-99968bc2b6af.jpg
Theresa May says there is a "shared determination" among EU leaders to solve the Irish border problem preventing MPs from backing her deal.
She was speaking after meetings with German Chancellor Angela Merkel and Dutch Prime Minister Mark Rutte.
Minister - EU - Withdrawal - Deal - Backstop
The prime minister says there can be no EU withdrawal deal without a backstop plan for the Irish border.
But she said she was seeking guarantees that it would be "only temporary" to address the concerns of her own MPs.
Labour - Leader - Jeremy - Corbyn - Mrs
But Labour leader Jeremy Corbyn labelled Mrs May the "runaway prime minister" and said her trip was a "waste of time and public money".
Kuenssberg: Is confidence vote looming?
Reality - Check - Brussels - Negotiations
Reality Check: Does Brussels blink in negotiations?
Mr Tusk, President of the European Council, tweeted: "Long and frank discussion with PM Theresa May ahead of Brexit summit. Clear that EU27 wants to help. The question is how."
Angela - Merkel - Deal - Solution - Irish
Angela Merkel said the deal could not be re-negotiated but she was still optimistic a solution to the Irish border issue could be found.
What is Theresa May asking for?
Critics - Backstop - Customs - Arrangement - Need
Critics object to the backstop - a temporary customs arrangement designed to prevent the need for checkpoints at the Irish border if a long-term solution that avoids them cannot be agreed - because it imposes different regulations in Northern Ireland from the rest of the UK.
They also object to the fact that under the terms of the withdrawal agreement, the UK can not exit the backstop without the EU agreeing.
Tuesday - Vote - Deal - Mrs - May
After aborting Tuesday's planned vote on the deal, Mrs May is believed to be considering how to give the UK Parliament a vote on whether to enter the backstop - and an annual vote on whether the country should remain in it.
Ministers have suggested this could be done in an "addendum" to the withdrawal agreement, without changing the main text of it.
Brussels - Mrs - May
Speaking in Brussels, Mrs May...
Wake Up To Breaking News!