You give all the appearance of the being a reasonable sort of fellow then you slip in "There is nothing duplicitous about the Irish/EU stance in this."
This is an extract from an article I linked earlier which I find to be a balanced analysis - it describes the subcontracting of RoI bilateral negotiations to the EU which I think was extremely duplicitous.
"Ireland plans
Brussels was not the only European capital where politicians and civil servants had been preparing for Brexit.
One adviser on European affairs to a prominent EU27 leader said Dublin had begun lobbying other EU countries in the months before the referendum to ensure Ireland was protected in the event of decision by the U.K. to leave. “If there is one player which made Ireland go to the top of the agenda, it was Ireland,” the adviser said. The Irish were pushing on an open door. EU members were always going to give priority to the vital interests of a member state over those of a country that had decided to turn its back on the Union — just as they had sided with Cyprus over the Turkish Cypriots, despite Brussels’ support for a peace deal for the divided island that the Turkish Cypriots had accepted and the Greek Cypriots voted to reject.
That Ireland felt the need to reiterate its commitment is illustrative of how the country’s leaders saw Brexit as an existential threat. Northern Irish peer Paul Bew, one of the chief architects of the Good Friday Agreement, said Dublin’s preparation was typical of the Irish in their long history of negotiations with Britain. “They are on top of the detail, and we [the British] are incurious. The people at the top of the U.K. government are also paralyzed by imperial guilt.”
The contrast with London was stark. While Cameron refused to allow officials to prepare for a Leave vote — barring officials from putting anything on paper — Ireland had produced a 130-page Contingency Plan with an hour-by-hour checklist. On the morning the referendum result was announced, then Irish Prime Minister Enda Kenny made a statement intended to reassure the markets and Irish citizens. Its central thrust was blunt: Ireland would remain a committed member of the EU. The point was so important he repeated it.
“Ireland will, of course, remain a member of the European Union,”
Kenny declared. “That is profoundly in our national interest.” His government, he said, had “prepared to the greatest extent possible for this eventuality.”
That Ireland, which joined the bloc along with the U.K. in 1973, felt the need to reiterate its commitment is illustrative of how the country’s leaders saw Brexit as an existential threat. Not only do the two countries share a lengthy and complex colonial history, they remain uniquely intertwined. The two countries share a common travel area — a mini Schengen — a language, and of course, a common land border, one with a violent history quieted by a delicate peace agreement that Brexit threatened to unravel
Hard border
The problem posed by the border between Northern Ireland and the Republic of Ireland was evident long before the U.K. voted to leave.
On June 9, 2016, two weeks before the referendum, former U.K. Prime Ministers
John Major and Tony Blair visited Northern Ireland to warn that the future of the union was “on the ballot paper” and that a Leave vote risked the return of border controls with the Republic of Ireland.
The Republic of Ireland and the U.K. had agreed a common travel area in the 1920s and joined the EU together in 1973. There had never been a moment when one country was in the EU and the other not.And yet, for all its preparations, Dublin had not come up with a solution.
In Cameron’s statement to the House of Commons on June 27 he said the British and Irish governments would start discussion that week to “work through the challenges relating to the common border area.”
In early scoping exercises, according to “Brexit & Ireland,” by Tony Connelly, Europe editor at the Irish broadcaster RTÉ, Dublin had proposed a U.K.-Ireland bilateral trade agreement for agriculture to avoid the return of a hard border.
This had been rejected out of hand by the EU as illegal.
The Anglo-Irish talks went on for months. Even as May was setting out her “red lines” at the Tory Party conference, Irish and British civil servants were meeting in the Foreign Office in London for a two-day summit, with Brexit on the agenda.
"There was always a worry that the Irish were the Brits’ Trojan Horse" — Senior EU official
These bilateral talks — taking place before the Brexit negotiations had officially started — soon caught the attention of Brussels, where officials were becoming concerned.
“From the autumn onwards, they had their diplomacy on the ground, taking everyone through the details of the Good Friday Agreement,” said one senior EU official intimately involved in the negotiations. “But there was always a worry that the Irish were the Brits’ Trojan Horse.”
A few days after May’s speech at the party conference, Michel Barnier, the Commission’s chief Brexit negotiator, arrived in Dublin. The message was clear: Stop negotiating with the British. From then on, it would be Brussels that took on responsibility for the Irish border."