A border poll in Northern Ireland would be “divisive” and “a bad idea”, Irish Prime Minister Leo Varadkar has said.
On Thursday, former first minister Peter Robinson said any future border poll can not be conducted on the basis of a simple majority.
He said the idea of a “majority of one” would lead to chaos.
Mr Varadkar said “a simple majority is enough”, but added “the question we need to ask is would that be a good thing?”
The taoiseach made his comment on Good Morning Ulster ahead of his visit to Northern Ireland on Friday.
It will be the first time an Irish prime minister has been to the headquarters of the Orange Order in Belfast.
“I think a border poll would be defeated and very divisive,” said Mr Varadkar.
“We should be respecting the primacy of the Good Friday Agreement and, at the heart of the Good Friday Agreement, is power-sharing within Northern Ireland, ever-increasing cooperation within the north and south and peace in Britain and Ireland.
“While the Good Friday Agreement provides for the possibility of a border poll, and would allow that to pass by a majority of one, I don’t think the time or the conditions are right.
“I think the focus should be on getting the institutions up and running again, rather than focusing on a border poll.”
Speaking during a lecture at Queen’s University in Belfast, Mr Robinson shared Mr Varadkar’s views that the focus must be on restoring a power-sharing government in Northern Ireland.
His inaugural lecture delivered on Thursday evening was entitled “Negotiating the Way Forward: Restoring Government in Northern Ireland”.
A number of academics have protested at his appointment to the non paid, part-time position, attached to the Senator George J Mitchell Institute for Global Peace, Security and Justice.
Mr Robinson told the audience: “The existing simplistic, majority-of-one, mechanism to deal with colossal constitutional change would be a recipe for chaos if ever it were to be activated.
“It is better to deal with the process that would be involved, when there is no reason to anticipate an outcome that obliges change, rather than having to tackle the issue on the fly if it was ever to be triggered in the future.”
In reference to the continuing deadlock preventing the return of a power-sharing executive in Northern Ireland he said the less well off are suffering the most:
“A legion of decisions awaits Ministerial sign-off. These include matters vital to the public health, well being and prosperity.
“Inescapably, it is the poor, the needy, the meek and humble who suffer most.”
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Mr Robinson said the next set of negotiations must feel like a “settlement” and not part of an ongoing process.
He added it would not be possible for party leaders to bring all of their members with them on any potential agreement:
“Let’s be clear, not all of your colleagues, will want to make the necessary concessions.
“That’s where leadership comes in.
“If you want support, you must not show any uncertainty. You must take ownership of the deal. Nobody can sell it better than you can,” he added.
‘Deal won’t sell itself’
He said that for a deal to be sold to the public, party leaders needed to become “evangelists” for it: “Discipline is essential. You and your team must be out there positively selling the benefits of the deal.
“No matter how good the deal may be, it will not sell itself,” he added.
Among those listening to the speech was the current DUP leader Arlene Foster.
She rejected a suggestion that the reference to leadership was criticism of her:
“I think he was actually reflecting what happened in February because, of course, it was the very first time that there wasn’t a soft landing.
“In fact papers were released to the media, commentary was made on those papers and he is right about that.
“It makes it a lot more difficult to put back together again and to build trust up again when something like that happens,” she added.