"(a) to secure the prompt return of children wrongfully removed to or retained in any Contracting State; and (b) to ensure that rights of custody and of access under the law of one Contracting State are effectively respected in the other Contracting States."
"(a) it is in breach of rights of custody attributed to a person, an institution or any other body, either jointly or alone, under the law of the State in which the child was habitually resident immediately before the removal or retention; and (b) at the time of removal or retention those rights were actually exercised, either jointly or alone, or would have been so exercised but for the removal or retention."
"The whole object of the Convention is to secure the swift return of children wrongfully removed from their home country, not only so that they can return to the place which is properly their 'home', but also so that any dispute about where they should live in the future can be decided in the courts of their home country, according to the laws of their home country and in accordance with the evidence which will mostly be there rather than in the country to which they have been removed."
"This case has all the hallmarks of what no doubt frequently occurs in these cases, of parents seeking to compromise a situation, allowing the abducting parent to remain in the country to which he or she has gone provided the wronged parent is satisfied as to the other matters which are in issue between them. Only if there were such a concluded agreement could it be said that there was clear and unequivocal conduct such as to fall within the exception….it would be most unfortunate if parents in this situation were deterred from seeking to make sensible arrangements, in consequence of what is usually an acknowledged breakdown in the relationship between them, for fear that the mere fact that they are able to contemplate that the child should remain where he has been taken will count against them in these proceedings. Such negotiations are, if anything, to be encouraged. They should not therefore necessarily fall within the exception or necessarily lead to the conclusion as a matter of fact that there was a subjective state of mind that was wholly content for the child to remain here."
“(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.