On Tuesday Boris Johnson clashed with the Irish Taoiseach Leo Varadkar over the backstop in their first phone call.
Johnson told Varadkar he will approach the Brexit negotiations in “a spirit of friendship” and said any new deal must see the backstop abolished.
Varadkar said the emergency measure to prevent a hard border was “necessary as a consequence” of UK decisions.
A spokeswoman said, The Prime Minister made clear that the government will approach any negotiations which take place with determination and energy, and in a spirit of friendship, and that his clear preference is to leave the EU with a deal, but it must be one that abolishes the backstop.”
Dublin reiterated that the EUs position is clear, they will not renegotiate.
A spokesman said, “On Brexit, the Taoiseach emphasised to the Prime Minister that the backstop was necessary as a consequence of decisions taken in the UK and by the UK Government.
“Alternative arrangements could replace the backstop in the future, as envisaged in the Withdrawal Agreement and the Political Declaration on the future relationship, but thus far satisfactory options have yet to be identified and demonstrated.”