38 HASSAN v. THE UNITED KINGDOM – JUDGMENT effects, outside their territories can constitute an exercise of jurisdiction within the meaning of Article 1 only in exceptional cases (Banković, cited above, § 67). 132. To date, the Court in its case-law has recognised a number of exceptional circumstances capable of giving rise to the exercise of jurisdiction by a Contracting State outside its own territorial boundaries. In each case, the question whether exceptional circumstances exist which require and justify a finding by the Court that the State was exercising jurisdiction extra-territorially must be determined with reference to the particular facts. (β) State agent authority and control 133. The Court has recognised in its case-law that, as an exception to the principle of territoriality, a Contracting State’s jurisdiction under Article 1 may extend to acts of its authorities which produce effects outside its own territory (see Drozd and Janousek v. France and Spain, judgment of 26 June 1992, Series A no. 240, § 91; Loizidou v. Turkey (preliminary objections), 23 March 1995, § 62, Series A no. 310; Loizidou v. Turkey (merits), 18 December 1996, § 52, Reports of Judgments and Decisions 1996‑VI; and Banković, cited above, 69). The statement of principle, as it appears in Drozd and Janousek and the other cases just cited, is very broad: the Court states merely that the Contracting Party’s responsibility ‘can be involved’ in these circumstances. It is necessary to examine the Court’s case-law to identify the defining principles. 134. First, it is clear that the acts of diplomatic and consular agents, who are present on foreign territory in accordance with provisions of international law, may amount to an exercise of jurisdiction when these agents exert authority and control over others (Banković, cited above, § 73; see also X v. Federal Republic of Germany, no. 1611/62, Commission decision of 25 September 1965, Yearbook of the European Convention on Human Rights, vol. 8, pp. 158 and 169; X v. the United Kingdom, no. 7547/76, Commission decision of 15 December 1977; WM v. Denmark, no. 17392/90, Commission decision of 14 October 1993). 135. Secondly, the Court has recognised the exercise of extra-territorial jurisdiction by a Contracting State when, through the consent, invitation or acquiescence of the Government of that territory, it exercises all or some of the public powers normally to be exercised by that Government (Banković, cited above, § 71). Thus where, in accordance with custom, treaty or other agreement, authorities of the Contracting State carry out executive or judicial functions on the territory of another State, the Contracting State may be responsible for breaches of the Convention thereby incurred, as long as the acts in question are attributable to it rather than to the territorial State (see Drozd and Janousek, cited above; Gentilhomme and Others v. France, nos. 48205/99, 48207/99 and 48209/99, judgment of 14 May 2002; and also X and Y v. Switzerland, nos. 7289/75 and 7349/76, Commission’s admissibility decision of 14 July 1977, DR 9, p. 57). 136. In addition, the Court’s case-law demonstrates that, in certain circumstances, the use of force by a State’s agents operating outside its territory may bring the individual thereby brought under the control of the State’s authorities into the State’s Article 1 jurisdiction. This principle has been applied where an individual is taken into the custody of State agents abroad. For example, in Öcalan v. Turkey [GC], no. 46221/99, § 91, ECHR 2005‑IV, the Court held that ‘directly after being handed over to the Turkish officials by the Kenyan officials, the applicant was effectively under Turkish authority and therefore within the “jurisdiction” of that State for the purposes of Article 1 of the Convention, even though in this instance Turkey exercised its authority outside its territory’. In Issa and Others v. Turkey,