Convention for the Definition of Aggression
His majesty the king of Roumania, the president of the Estonian Republic, the president of the Latvian Republic, the president of the Polish Republic, the president of the Turkish Republic, the Central Executive Committee of the Union of Soviet Socialist Republics, his imperial majesty the shaahi of Persia, and his majesty the king of Afghanistan;
Each of the High Contracting Parties undertakes to accept in its relations with each of the other Parties, from the date of the entry into force of the present Convention, the definition of aggression as explained in the report dated May 24th, 1933, of the Committee on Security Questions (Politis report) to the Conference for the Reduction and Limitation of Armaments, which report was made in consequence of the proposal of the Soviet delegation.
Accordingly, the aggressor in an international conflict shall, subject to the agreements in force between the parties to the dispute, be considered to be State which is the first to commit any of the following actions:
(1) Declaration of war upon another State;
(2) Invasion by its armed forces, with or without a declaration of war, of the territory of another State;
(3) attack by its land, naval or air forces, with or without a declaration of war, on the territory, vessels or aircraft of another State;
(4) Naval blockade of the coasts or ports of another State;
(5) Provision of support to armed bands formed in its territory which have invaded the territory of another State, or refusal, notwithstanding the request of the invaded State, to take, in its own territory, all the measures in its power to deprive those bands of all assistance or protection.
No political, military, economic or other considerations may serve as an excuse or justification for the aggression referred to in Article 2. (For examples, see Annex.)
The present Convention shall be ratified by each of the High Contracting Parties in accordance with its laws.
The instruments of ratification shall be deposited by each of the High Contracting Parties with the Government of the Union of Soviet Socialist Republics.
As soon as the instruments of ratification have been deposited by two of the High Contracting Parties, the present Convention shall come into force as between those two Parties. The Convention shall come into force as regards each of the other High Contracting Parties when it deposits its instruments of ratification.
Each deposit of instruments of ratification shall immediately be notified by the Government of the Union of Soviet Socialist Republics to all the signatories of the present Convention.
The present Convention has been signed in eight copies, of which each of the High Contracting Parties has received one.
In faith whereof the above-named Plenipotentiaries have signed the present Convention and have thereto affixed their seals.
Done in London, July 3rd, 1933.
Annex to Article III of the Convention relating to the defenition of aggression
The High Contracting Parties signatories of the Convention relating to the definition of aggression,
A. The internal condition of a State:
B. The international conduct of a State:
The High Contracting Parties further agree to. recognise that the present Convention can never legitimate any violations of international law that may be implied in the circumstances comprised in the above list.
Protocol of signature
It is hereby agreed between the High Contracting Parties that should one or more of the other States immediately adjacent to the Union of Soviet Socialist Republics accede in the future to the present Convention, the said accession shall confer on the State or States in question the same rights and shall impose on them the same obligations as those conferred and imposed on the ordinary signatories.
Done at London on July 3rd, 1933.
The Republic of Finland has joined to Convention on July 22nd, 1933