of defence equipment and services among defence-related industries, defence research establishments and their respective armed forces. Article 10 Supplementary Agreements State Parties may, in respect of any particular issue covered by the provisions of this Pact, make such subsequent agreements, of a specific or general nature, as would, in their opinion, enhance the effective implementation of this Pact. Article 11 Implementation 1. State Parties shall receive delegations of Member States for the purpose of consultation regarding implementation of any aspect of this Pact. 2. The Secretariat of the SADC Organ shall co-ordinate the implementation of this Pact. Article 12 Confidentiality 1. State Parties undertake not to disclose any classified information obtained in the implementation of this Pact, or any other related agreements, other than to their own staff, to whom such disclosure is essential for purposes of giving effect to this Pact or such further agreements pursuant to this Pact. 2. State Parties further undertake not to use any classified infor mation obtained during any multilateral cooperation among them to the detriment of or against the interests of any State 78