The economies of both parts of Ireland were expected to be seriously affected by a no-deal Brexit.   Bernard Jenkin, chairman of the steering group of the European Research Group of Tory-Hard MEPs, said that Brexit would not be implemented until the UK government had imposed its own interpretation of the withdrawal agreement. This should provide some breathing space and maintain much of the status quo as both sides try to negotiate a trade agreement. No agreement also means the immediate departure of EU institutions such as the European Court of Justice and Europol, its law enforcement agency. Leaving the EU is expected to cause serious disruption to the UK`s security relationship and threaten the UK`s national security. The difficulties would have been considerably exacerbated in the event of a non-agreement.  The UK government has issued a communication on how data protection legislation works if the UK had left the EU without a deal.  The EU`s negotiating mandate is clear: a comprehensive agreement on air transport (which airlines want) would require the UK to respect certain level playing field, on state aid, labour law, the environment and competition. A Brexit without a deal has been strongly supported by the Trump administration.  John R. Bolton, U.S. National Security Adviser, told British Prime Minister Boris Johnson that President Trump wanted a successful UK exit from the European Union.  A Brexit without a deal would also have changed Britain`s alignment with US rules, not EU rules.
 In parallel with trade negotiations, negotiations are taking place on the status of Gibraltar after Brexit, with the participation of the governments of Rock, Spain and the United Kingdom, which deals with Gibraltar`s foreign policy. Therefore, any agreement on Gibraltar should be included in any broader agreement on future relations between the UK and the EU, meaning that a no-deal would also derail these talks and Gibraltar would only have to hope for a fresh start.  Department for Exiting the European Union (2018), “How to prepare if the UK leaves the EU no deal: guidance as to prepare for Brexit if there`s no deal,” Collection, 23 August. After Mrs May`s deal failed, the Brexit deadline was extended until 31 October. Air transport would have been particularly affected if the common European air area and the EU-US “open skies” agreement no longer applied to the UK following a “no deal” Brexit, as World Trade Organisation rules did not cover the sector, meaning that a British plane would not have been able to land at an EU airport the next day.  In September 2018, the UK government said that in the event of a non-agreement on air transport, the UK would allow EU airlines to use BRITISH airports anyway and expected EU countries to retaliate.  There have been a number of other issues in the area of air transport, including EUROPEAN-wide air traffic control, service agreements with the EU and other countries, safety rules and the UK`s relationship with the European Aviation Safety Agency. :7 EU-UK flights should not be affected for some time after a non-agreement exit, provided that the EU and the UK respect each other`s rights in this area. [Citation required] Not very.