(1) This Treaty shall enter into force on the ninetieth day after the date of deposit of the thirtieth instrument of ratification, acceptance or approval thereof, or of accession thereto, by a state or Regional Economic Integration Organisation which is a signatory to the Charter as of 16 June 1995.
(2) For each state or Regional Economic Integration Organisation which ratifies, accepts or approves this Treaty or accedes thereto after the deposit of the thirtieth instrument of ratification, acceptance or approval, it shall enter into force on the ninetieth day after the date of deposit by such state or Regional Economic Integration Organisation of its instrument of ratification, acceptance, approval or accession.
(3) For the purposes of paragraph (1), any instrument deposited by a Regional Economic Integration Organisation shall not be counted as additional to those deposited by member states of such Organisation.
Cementownia "Nowa Huta" S.A. v. Republic of Turkey, ICSID Case No. ARB(AF)/06/2
Award, 17 September 2009, paragraphs 105
Ioannis Kardassopoulos v. The Republic of Georgia, ICSID Case No. ARB/05/18
Decision on Jurisdiction, 6 July 2007, paragraph 201; 222