These are the details of the DUP's position as stated by their spokesman
Arlene Foster has thrown in yet another bombshell by claiming in a letter to the EU Commission that Brexit will in no way effect the peace process - she has consulted no-one before making this claim
One of the issues here in the UK's security, which is already a bit of an
unexplored territory
http://www.independent.co.uk/news/uk/crime/brexit-uk-crime-security-worsen-europe-eu-europol-brian-donald-isis-terrorism-safety-uk-leave-a8022856.html
Jim Carroll

DUP WARNS MAY OVER ANY BORDER CONCESSIONS
Party alarmed as EU talks with Britain enter critical stage in Brussels Taoiseach to hold meeting in Dublin today with president of European Council

Talks between the British government and the European Union, with the heavy involvement of Irish officials, are entering a critical stage in Brussels, as the EU side seeks concrete assurances on the Border from the British.
There was no signal from either side about the progress of the talks last night. But the DUP was sufficiently alarmed by the prospect of UK concessions on the Border to warn British prime minister Theresa May that any concession which affected Northern Ireland's relationship with the rest of the UK risked the party's support for Ms May's minority government.
In a further development, Westminster's Brexit committee said it could not see how Britain's commitment to keeping the Border open could be reconciled with its policy of leaving the customs union.

Place barriers
DUP leader Arlene Foster said she had made it clear to the British government there could be 'no arrangements agreed that compromise the integrity of the UK single market and place barriers, real or perceived, to the free movement of goods, services and capital between Northern Ireland and the rest of the United Kingdom
DUP MP Sammy Wilson said he was seeking clarification from the British government on reports that Ms May was preparing to make concessions to the EU on the Border.
'If there is any hint that in order to placate Dublin and the EU they're prepared to have Northern Ireland treated differently than the rest of the UK then they can't rely on our vote,' he said.
'They have to recognise that if this is about treating Northern Ireland differently or leaving us half in the EU, dragging along behind regulations which change in Dublin, it's not on,' Mr Wilson added.
British move
The fears in the DUP were being interpreted in political circles as evidence that a British move was becoming more likely. Discussions between the British and the EU will continue today and over the week-end in advance of a crucial meeting between Ms May and European Commission president Jean-Claude Juncker on Monday at which Ms May is expected to table the British offers on the Border, the Brexit bill and citizens' rights.
Last night, T?naiste and Minister for Foreign Affairs Simon Coveney said the Government 'cannot accept the re-emergence of a Border on this island'.
Other, EU countries were fully supportive of Ireland's position, he said, and if the British were unable to supply satisfactory assurances, 'then this process will have to be delayed'.
Taoiseach Leo Varadkar is to hold a meeting in Dublin today with Donald Tusk, president of the European Council.