THE Brexit process has "taken a very heavy toll" on British-Irish relations, a Fine Gael TD has claimed.
Neale Richmond also said he believes "a low not seen in decades" had been witnessed in recent weeks amid ongoing stalemate between the UK and the Republic and European Union over the Northern Ireland Protocol.
But he said the resignation of Boris Johnson as British prime minister could provide the Republic and the EU with "an opportunity to re-set our relations with the UK".
Mr Richmond, TD for Dublin Rathdown, said the "past six years of the disastrous Brexit process" had heavily impacted relations between the Republic and UK - both north-south and east-west.
"The past few weeks alone have brought these relations to a low not seen in decades; the intention of the British government to break international law by overriding the Northern Ireland Protocol and going against the will of the people of Northern Ireland has brought deep disappointment across this island," he said.
"Boris Johnson’s announcement that his tenure as prime minister will soon come to an end, both Ireland and the EU are faced with an opportunity to re-set our relations with the UK.
"It is fair to say that under Boris Johnson, relations between the UK and Ireland and the EU have taken a nose-dive.
"Resentment, harsh rhetoric, repeated violations of agreements as well as gaslighting techniques have occurred so often under this government they are now almost normalised."
However, Mr Richmond said the new British prime minister has "a perfect opportunity to put Boris Johnson’s wrongs to right".
"What everyone in this situation requires is a partner in London who will work to implement the protocol in a way that works for everyone in the UK, mostly importantly everyone in Northern Ireland, and who can fulfil their obligations under the Good Friday Agreement." he said.
"This opportunity can be summed up by simply stating that if the new prime minister acts in true good faith, then relations will be on an improved path.
"The impact that internal politics in the Conservative party have had on the people of Northern Ireland and indeed the people of the EU is quite boggling and at times depressing.
"We simply cannot allow the next prime ninister to use Northern Ireland as a distraction tool and a political play-thing in their quest for political success. As such, the Irish government will continue to stand up for what we believe to be right; to defend the people of Northern Ireland, to defend the Good Friday Agreement and to defend international law and the EU Single Market.
"The best way to start this new relationship on the right track is to call for an emergency British Irish Council meeting as soon as a new prime minister takes position.
"By approaching these conversations in an open and honest manner, always preferring to hammer out the issues in person rather than through terse media appearances and unwarranted legislation, we will improve relations tenfold."
He said "we owe it to the people of the UK, many of them Irish, to call out bad behaviour when it impacts the people of Ireland and Britain, and seek to make it right".
"In politics we can disagree without being disagreeable, however, the time has come for the next Prime Minister to put this at the forefront of their relations with Ireland and the EU," he said.
