Fianna Fáil leader Micheál Martin has said that Ireland is being pushed further and further back in Brexit negotiations.
Addressing the Fianna Fáil 1916 Commemoration at Arbour Hill in Dublin, Mr Martin said Ireland could face enormous pressure to accept whatever is proposed - to protect the EU’s financial settlement with the UK.
Mr Martin said the current political vacuum had left Northern Ireland with no local voice and no place at the table where its future is being decided in Brexit negotiations.
With less than a year to go before the UK leaves the EU, he said there was no proposal on the table from anyone which can deliver both on Brexit and a soft border in Ireland.
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Mr Martin said the only way to address the disruption to North-South relations post-Brexit was for Northern Ireland to have special economic zone status.
Responding to Mr Martin’s comments on Brexit a spokesperson for the Tánaiste Simon Coveney said: "The Irish Government's negotiating position on Brexit has been clear and consistent since the UK voted to leave the EU.
"Negotiations are sensitive and ongoing, so it is curious to say the least that - at a time when European backing of Ireland from Donald Tusk, Michel Barnier and governments across the EU has been rock solid - Fianna Fáil is trying to create division and fear on Brexit at home for party political gain and a few headlines."
Mr Martin also accused the Fine Gael-led Government of being obsessed with spin over substance.
He said it was failing to use its mandate to address issues which they have allowed reach emergency level.
Remembering 1916, Mr Martin said the centrality of women's rights to the Irish revolution had long been overlooked.
While there had been much progress, he said Ireland was not yet a society that hears the voices of women and allows each woman to fulfil her potential.