It has also been repeatedly declared that many States would require to know what military support they could count on, before the convening of the Conference, if they are to submit to {207} the Conference proposals for large reductions of armaments; this might necessitate negotiations between the Governments and with the Council before the meeting of the Conference for the reduction of armaments provided for in Article 17. The undertakings referred to in Article 13 of the Protocol should be interpreted in the light of the above. In drawing up the general programme of the Conference, it will also be necessary, as stated in paragraph 2 of Article 17, for the Council, apart from other criteria "to take into account the undertakings mentioned." In view of the close interdependence of the three great problems involved, namely, the pacific settlement of disputes, sanctions against those who disturb the peace of the world, and reduction of armaments, the Protocol provides for the convening by the Council of a general Conference for the Reduction of Armaments and for the preparation of the work of such a Conference. Furthermore, the application of the clauses concerning arbitration and sanctions will be conditional on the adoption by the said Conference of a plan for the reduction and limitation of armaments. Moreover, in order to preserve the connection between the three big problems referred to above, it is provided that the whole Protocol will lapse in the event of the non-execution of the scheme adopted by the Conference. It devolves upon the Council to declare this under conditions to be determined by the Conference itself. The last paragraph of Article 21 provides for the case of the partial lapsing of the Protocol after it has been put into force. Should the plan adopted by the Conference be regarded as having been put into effect, any State which fails to execute it, so far as it is concerned, will not benefit by the provisions of the Protocol. {208} 6.--THE COVENANT AND THE PROTOCOL. _Article 19._ The present Protocol emphasises and defines certain obligations arising out of the Covenant. Those of which the present Protocol makes no mention are not affected in any manner. They still exist. Examples which might be quoted are those laid down in Article 16, paragraph 3, of the Covenant, namely, the obligation of the States to give one another mutual support in order to minimise the loss and inconvenience resulting from the application of the economic and financial sanctions or the obligation of the States to take the necessary steps to afford passage through their territory to forces which are co-operating to protect the covenants of the League.