The undersigned, Plenipotentiaries of the Powers invited to the Second 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 29 November (11 December) 1868, land being desirous of renewing the declaration of The Hague of 29 July 1899, which has now expired, Declare: The Contracting Powers agree to prohibit, for a period extending to the close of the Third Peace Conference, the discharge of projectiles and explosives from balloons or by other new methods of a 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 ‘ procès-verbal ‘ shall be drawn up recording the receipt of the ratifications, of which a duly certified copy shall be sent, through the diplomatic channel, to all the Contracting Powers. Non-Signatory Powers may adhere to the present Declaration. To do so, they must make known their adhesion to the Contracting Powers by means of a written notification, addressed to the Netherlands Government, and communicated by it 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 forthwith communicated by it to all the other Contracting Powers. This denunciation shall only have effect in regard to the notifying Power. In faith whereof the Plenipotentiaries have appended their signatures to the present Declaration. Done at The Hague, 18 October 1907 in a single copy, which shall remain deposited in the archives of the Netherlands Government, and duly certified copies of which shall be sent through the diplomatic channel, to the Contracting Powers.