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Laws of War :
Prohibiting Launching of Projectiles and Explosives from Balloons (Hague, IV); July 29, 1899
Declaration signed at The Hague July 29, 1899; Senate advice and consent to ratification February 5, 1900; Ratified by the President of the United States April 7, 1900; Proces-verbal of first deposit of ratifications (including that of the United States) at The Hague dated September 4, 1900; Entered into force September 4, 1900; Proclaimed by the President of the United States November 1, 1901; Expired September 4, 1905; a new declaration on the same subject was signed on October 18, 1907.
32 Stat. 1839;
Treaty Series 393
[TRANSLATION]

DECLARATION

The Undersigned, Plenipotentiaries of the Powers represented at the International Peace Conference at The Hague, duly authorized to that effect by their Governments, inspired by the sentiments which found expression in the Declaration of St. Petersburg of the 29th November (11th December), 1868,

Declare that:

The Contracting Powers agree to prohibit, for a term of five years, the launching of projectiles and explosives from balloons, or by other new methods of similar nature.

The present Declaration is only binding on the Contracting Powers in case of war between two or more of them.

It shall cease to be binding from the time when, in a war between the Contracting Powers, one of the belligerents is joined by a non-Contracting Power.

The present Declaration shall be ratified as soon as possible.

The ratifications shall be deposited at The Hague.

A proces-verbal shall be drawn up on the receipt of each ratification, of which a copy, duly certified, shall be sent through the diplomatic channel to all the Contracting Powers.

The non-Signatory Powers may adhere to the present Declaration. For this purpose they must make their adhesion known to the Contracting Powers by means of a written notification addressed to the Netherlands Government, and by it forthwith communicated to all the other Contracting Powers.

In the event of one of the High Contracting Parties denouncing the present Declaration, such denunciation shall not take effect until a year after the notification made in writing to the Netherlands Government, and by it forthwith communicated to all the other Contracting Powers.

This denunciation shall only affect the notifying Power.

In faith of which the Plenipotentiaries have signed the present Declaration, and affixed their seals thereto.

Done at The Hague the 29th July, 1899, in a single copy, which shall be kept in the archives of the Netherlands Government, and of which copies, duly certified, shall be sent through the diplomatic channel to the Contracting Powers.

[Signatures of Plenipotentiaries]

Treaties and Other International Agreements of the United States of America 1776-1949
Compiled under the direction of Charles I. Bevans LL.B.
Assistant Legal Advisor Department of State
Volume 1 Multilateral 1776-1917
Department of State Publication 8407
Washington, DC : Government Printing Office, 1968

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