The reference to treaty obligations in the penultimate sentence of Article 10(1) does not include decisions taken by international organisations, even if they are legally binding, or treaties which entered into force before 1 January 1970.
(1) Contracting Parties shall endeavour to settle disputes concerning the application or interpretation of this Treaty through diplomatic channels.
(2) If a dispute has not been settled in accordance with paragraph (1) within a reasonable period of time, either party thereto may, except as otherwise provided in this Treaty or agreed in writing by the Contracting Parties, and except as concerns the application or interpretation of Article 6 or Article 19 or, for Contracting Parties listed in Annex IA, the last sentence of Article 10(1), upon written notice to the other party to the dispute submit the matter to an ad hoc tribunal under this Article.
(3) Such an ad hoc arbitral tribunal shall be constituted as follows:
Mohammad Ammar Al-Bahloul v. Republic of Tajikistan, SCC Case No. V064/2008
Partial Award on Jurisdiction and Liability, 2 September 2009, paragraphs 121
Blusun S.A., Jean-Pierre Lecorcier and Michael Stein v. Italian Republic, ICSID Case No. ARB/14/3
Final Award, 27 December 2016, paragraphs 289; 301
Charanne and Construction Investments v. Spain, SCC Case No. V 062/2012
Award, 21 January 2016, paragraph 435
Hulley Enterprises Limited (Cyprus) v. Russian Federation, PCA Case No. AA 226
Final Award, 18 July 2014, footnote 2431
Petrobart Limited v. The Kyrgyz Republic, SCC Case No. 126/2003
Award, 29 March 2005, page 24
Plama Consortium Limited v. Republic of Bulgaria, ICSID Case No. ARB/03/24
Decision on Jurisdiction, 8 February 2005, paragraphs 121; 150
Veteran Petroleum Limited (Cyprus) v. Russian Federation, PCA Case No. AA 228
Final Award, 18 July 2014, footnote 2432
Yukos Universal Limited (Isle of Man) v. Russian Federation, PCA Case No. AA 227
Final Award, 18 July 2014, footnote 2432