Article 1 Definitions 1. In this Pact, terms and expressions defined in Article 1 of the Treaty and of the Protocol on Politics, Defence and Security Co-operation shall bear the same meaning unless the context otherwise requires. 2. In this Pact, unless the context otherwise requires: armed attack means the use of military force in violation of the sovereignty, territorial integrity and independence of a State Party; collective self-defence means the measures undertaken collectively by the State Parties to ensure peace, stability and security in the Region; destabilise means to instigate, plan, execute or assist in any of the following: a) an armed attack against a State Party; b) sabotage aimed at the people of a State Party or an asset of a State Party, whether inside or outside the territory of the State Party; or c) any act or activity aimed at chang ing the constitutional order of a State Party through unconstitutional means; state party means a Member State that has ratified or acceded to this Pact; 74