Artikel XIII

a). The headquarters of ITSO shall be in Washington, D.C. unless otherwise determined by the Assembly of Parties.
b). Within the scope of activities authorized by this Agreement, ITSO and its property shall be exempt in all States Party to this Agreement from all national income and direct national property taxation. Each Party undertakes to use its best endeavors to bring about, in accordance with the applicable domestic procedure, such further exemption of ITSO and its property from income and direct property taxation, and customs duties, as is desirable, bearing in mind the particular nature of ITSO.
c). Each Party other than the Party in whose territory the headquarters of ITSO is located shall grant in accordance with the Protocol referred to in this paragraph, and the Party in whose territory the headquarters of ITSO is located shall grant in accordance with the Headquarters Agreement referred to in this paragraph, the appropriate privileges, exemptions and immunities to ITSO, to its officers, and to those categories of its employees specified in such Protocol and Headquarters Agreement, to Parties and representatives of Parties. In particular, each Party shall grant to these individuals immunity from legal process in respect of acts done or words written or spoken in the exercise of their functions and within the limits of their duties, to the extent and in the cases to be provided for in the Headquarters Agreement and Protocol referred to in this paragraph. The Party in whose territory the headquarters of ITSO is located shall, as soon as possible, conclude a Headquarters Agreement with ITSO covering privileges, exemptions and immunities. The other Parties shall, also as soon as possible, conclude a Protocol covering privileges, exemptions and immunities. The Headquarters Agreement and the Protocol shall be independent of this Agreement and each shall prescribe the conditions of its termination.