Francisco Solano López, having realized that the…

Francisco Solano López, having realized that the war is lost, is ready to sign a peace treaty with the Allies.

He invites Barolomé Mitre to a conference in Yatayty Cora on September 12, 1866, but no agreement is reached, as Mitre's conditions for signing the treaty are that every article of the secret Treaty of the Triple Alliance is still to be carried out, a condition that López refuses.

Article 6 of the treaty states, “The allies solemnly commit themselves not to abandon arms unless commonly agreed, and as long as they haven’t overthrown the current government of Paraguay, as well as not to try separately, nor sign any peace treaty, truce, armistice which would put an end to or suspend the war, unless agreed by all parties".

Despite López's refusal, Article 6 not only renders any possibility of truce or peace nearly impossible but also stipulates that the war is to continue until the current government ceases to be, which means the death or removal of López.