The weekend saw a heated back and forth between London and Dublin over how the border on the island of Ireland will be dealt with post-Brexit.
On Sunday DUP MP Sammy Wilson accused Irish foreign minister Simon Coveney of being "belligerent" and a "Brit basher" in response to comments about the use of technology to solve issues around the border on the island of Ireland after Brexit.
Speaking on the BBC's Andrew Marr Show, Mr Coveney said any such solutions could put the Good Friday Agreement in jeaprody.
Mr Coveney said: "If you live in the island of Ireland, if you live in the border counties, if you talk to people about their memories of the past in the context of the border you will often end up talking to someone with tears in their eyes."
His comments came as Prime Minister Theresa May stated the importance of the union between Northern Ireland and Great Britain.
Writing in the Sunday Times, Mrs May described herself as a "proud unionist" and said any deal with the European Union must "protect our precious Union and also honour the agreements that were reached in the historic Northern Irish peace process".
Cabinet discussions will take place this week on how future customs arrangements on the island of Ireland will be dealt with.
Speaking on Monday morning on BBC's Good Morning Ulster programme, DUP MEP Diane Dodds called Mr Coveney's comments "an outrageous intervention in the affairs of the United Kingdom. something that Simon Conveney has a habit of doing in the last while".
Also speaking on the programme, Sinn Fein MLA Mairtin O Muilleoir said there was "no evidence technology can solve this particular problem the British have created" and claims that it could were "magical realism".
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