The Northern Ireland Protocol, known as the “Irish backstop”, was an annex to the November 2018 draft agreement outlining provisions to avoid a hard border in Ireland after the United Kingdom`s withdrawal from the European Union. The Protocol contained a safety net provision to deal with circumstances in which satisfactory alternative arrangements have yet to enter into force at the end of the transitional period. This project has been replaced by a new protocol which will be described as follows. After an unprecedented vote, on 4 December 22, 2018, MPs decided that the UK government was not respecting Parliament because it had refused to give Parliament the full legal advice it had received on the consequences of its proposed withdrawal conditions.  The central point of the opinion concerned the legal effect of the Backstop Agreement on Northern Ireland, the Republic of Ireland and the rest of the United Kingdom with regard to the customs border between the European Union and the United Kingdom and its impact on the Good Friday Agreement that led to the end of the unrest in Northern Ireland, and in particular on the security of the United Kingdom, to be able to leave the EU in practice, in accordance with the draft proposals. . . . .