People would be wise not to trust Boris Johnson on Brexit
A leaked British government report setting out the dire implications of a border down the Irish Sea, unveiled by Jeremy Corbyn yesterday, underlines two key points that will come as no surprise to people in Northern Ireland.
The first is that Brexit in any form is a monumental error that will have disastrous consequences for this island.
Secondly, it demonstrates beyond any doubt that voters - or political parties for that matter - would be unwise to put their trust in Boris Johnson.
Throughout this election campaign the prime minister has been repeating the mantra that he wants to 'get Brexit done', maintaining that he has a withdrawal deal that is 'oven ready' as he describes it.
This deal effectively places a border down the Irish Sea, a step too far for the DUP which had kept Theresa May in power and subsequently placed its faith in her successor, who was, after all, a man feted by the party, only to find itself confronted with a deal that it could not accept.
Even more, it is a deal being viewed by loyalists as an act of betrayal which could undermine the Union, something that was forewarned by many people ahead of the 2016 referendum.
The DUP is now under pressure over its support for the Tory government and Brexit, despite the fact that a decisive majority in the north voted to Remain.
The document produced by Mr Corbyn yesterday confirms unionist fears over a sea border. The Labour leader said that as well as customs and security checks on goods moving from Britain to Northern Ireland, goods moving the other way would be subject to regulatory rules and potential tariffs that would force up prices in Northern Ireland and be 'highly disruptive'.
In response, Mr Johnson dismissed Mr Corbyn's claims as 'complete nonsense'.
''They should believe exactly what I say, which is there will be no goods going from GB to NI or from NI to GB because we are going to come out of the EU whole and entire, and that was the objective that we secured,'' insisted the prime minister.
The difficulty is that Mr Johnson has a serious credibility problem and when it comes to Brexit and the impact on the north, very few will believe exactly what he says.