1. This Directive shall not apply to public contracts and design contests involving defence or security aspects which the contracting authority is obliged to award or organise in accordance with procurement procedures different from those laid down in this Directive established by any of the following:

(a) an international agreement or arrangement, concluded in conformity with the Treaties, between a Member State and one or more third countries or subdivisions thereof and covering works, supplies or services intended for the joint implementation or exploitation of a project by their signatories;

(b) an international agreement or arrangement relating to the stationing of troops and concerning the undertakings of a Member State or a third country;

(c) an international organisation.

All agreements or arrangements referred to in point (a) of the first subparagraph of this paragraph shall be communicated to the Commission, which may consult the Advisory Committee on Public Procurement referred to in Article 89.