Taoiseach (Irish Prime Minister) Leo Varadkar has invited Prime Minister Boris Johnson to Dublin to discuss Brexit.
The men held their first phone conversation on Tuesday, six days after Mr Johnson was installed in Number 10.
Mr Johnson insisted the UK will be leaving the EU by the 31 October deadline “no matter what”.
But Mr Varadkar maintained there could be no reopening of the withdrawal agreement.
The new British PM wants to change the Brexit agreement and get rid of the Irish border backstop: the insurance policy to maintain an open border unless and until another solution is found.
But that is something Dublin – and the EU – have refused to consider.
A UK government spokesperson said that during the call both leaders had reiterated their commitment to