The Taoiseach is reassuring unionists in Northern Ireland that the proposed new Brexit deal will not undermine the integrity of the UK.
The new Brexit Withdrawal Agreement will be debated at a special sitting of the House of Commons today.
MPs will vote on the revised withdrawal agreement negotiated by the EU and Boris Johnson.
If it's passed the deal will go on for ratification.
If it fails a further extension or a no-deal Brexit could be on the cards.
Speaking as the EU Leaders Summit came to a close in Brussels yesterday, Leo Varadkar said the deal respects the constitutional position of the North in the UK.
“If this is ratified and fully implemented, the queen will still be the queen, the pound will still be the pound and people will still post letters in Royal Mail red letterboxes,” he said.
“Northern Ireland will still be part of the UK and because of the Good Friday Agreement that is protected – until such a time, should that time ever arise, where the majority of people in Northern Ireland vote otherwise.”