“The first object of the Convention is to deter either parent (or indeed anyone else) from taking the law into their own hands and pre-empting the result of any dispute between them about the future upbringing of their children. If an abduction does take place, the next object is to restore the children as soon as possible to their home country, so that any dispute can be determined there. The left-behind parent should not be put to the trouble and expense of coming to the requested state in order for factual disputes to be resolved there. The abducting parent should not gain an unfair advantage by having that dispute determined in the place to which she has come.”
“It also hardly needs restating that, as set out in Re E at [52] and repeated In re S (A Child) (Abduction: Rights of Custody)[2012] 2 AC 257 at [6], the terms of Article 13(b) are "by their very nature restricted in their scope". It has a high threshold demonstrated by the use of the words "grave" and "intolerable".”
“94. In the Guide to Good Practice, at [40], it is suggested that the court should first "consider whether the assertions are of such a nature and of sufficient detail and substance, that they could constitute a grave risk" before then determining, if they could, whether the grave risk exception is established by reference to all circumstances of the case. In analysing whether the allegations are of sufficient detail and substance, the judge will have to consider whether, to adopt what Black LJ said in Re K, "the evidence before the court enables him or her confidently to discount the possibility that the allegations give rise to an Article 13(b) risk". In making this determination, and to explain what I meant in Re C, I would endorse what MacDonald J said in Uhd v McKay (Abduction: Publicity)[2019] 2 FLR 1159 , at [70], namely that "the assumptions made by the court with respect to the maximum level of risk must be reasoned and reasonable assumptions" (my emphasis). If they are not "reasoned and reasonable", I would suggest that the court can confidently discount the possibility that they give rise to an Article 13(b) risk.”
“i)There is no need for Art 13(b) to be narrowly construed. By its very terms it is of restricted application. The words of Art 13 are quite plain and need no further elaboration or gloss. ii) The burden lies on the person (or institution or other body) opposing return. It is for them to produce evidence to substantiate one of the exceptions. The standard of proof is the ordinary balance of probabilities but in evaluating the evidence the court will be mindful of the limitations involved in the summary nature of the Convention process. iii) The risk to the child must be 'grave'. It is not enough for the risk to be 'real'. It must have reached such a level of seriousness that it can be characterised as 'grave'. Although 'grave' characterises the risk rather than the harm, there is in ordinary language a link between the two. iv) The words 'physical or psychological harm' are not qualified but do gain colour from the alternative 'or otherwise' placed 'in an intolerable situation'. 'Intolerable' is a strong word, but when applied to a child must mean 'a situation which this particular child in these particular circumstances should not be expected to tolerate'. v) Art 13(b) looks to the future: the situation as it would be if the child were returned forthwith to his or her home country. The situation which the child will face on return depends crucially on the protective measures which can be put in place to ensure that the child will not be called upon to face an intolerable situation when he or she gets home. Where the risk is serious enough the court will be concerned not only with the child's immediate future because the need for protection may persist.”