Palmerston accepted Russell's suggestion that the war should be settled at a conference, but at the ensuing London Conference of 1864 in May and June the Danes refused to accept their loss of Schleswig-Holstein. The armistice ended on 26 June and Prussian-Austrian troops quickly invaded more of Denmark. On 25 June the Cabinet was against going to war to save Denmark, and Russell's suggestion to send the Royal Navy to defend Copenhagen was only carried by Palmerston's vote. Palmerston, however, said the fleet could not be sent in view of the deep division in the Cabinet.