The UK and EU are close to sealing a deal to resolve their post-Brexit trade dispute over Northern Ireland.
Despite the breakthrough being a win for Prime Minister Rishi Sunak, selling the deal to his own Conservative Party and its Northern Ireland allies may be difficult.
A meeting between Sunak and European Commission President Ursula von der Leyen is scheduled for Monday, with a joint news conference and statement in the House of Commons to follow.
UK and European Union leaders have been locked in dispute for years over post-Brexit trade arrangements for Northern Ireland.
Negotiations have intensified in recent weeks, culminating in a meeting between UK Prime Minister Rishi Sunak and European Commission President Ursula von der Leyen on Monday.
While a breakthrough in negotiations would be a win for Sunak, it may be difficult for him to sell any resulting deal to his Conservative Party and Northern Irish allies.
The potential breakthrough follows a Sunday announcement that von der Leyen would travel to England for the meeting with Sunak.
The UK and EU both noted that the announcement did not guarantee a positive outcome.
If a deal is made, UK Fisheries and Northern Ireland's access to the European Single Market would be key points in eventual negotiations.
Referred to as "one of the trickiest problems caused by Britain's departure from the EU," the ongoing dispute has been "poisoning UK-EU relations" according to the BBC.
If successful, the meeting between Sunak and von der Leyen could be a significant boost to Sunak as he seeks to manage the UK's trade relationships outside the EU.