108It thus follows from those clarifications that, first, in order, where necessary, to establish its jurisdiction under Article 7 of Regulation No 4/2009, the court of a Member State cannot require the maintenance applicant to show that he or she has been unsuccessful in bringing or has attempted to bring the proceedings in question before the courts of the third State concerned. It is therefore sufficient that the court of a Member State, in the light of all the matters of fact and of law in the case, be able to satisfy itself that the obstacles in the third State concerned are such that it would be unreasonable to require the applicant to apply for maintenance before the courts of that third State.