The platform of the Republican party had declared: "The Government of Spain having lost control of Cuba, and being unable to protect the property or lives of resident American citizens, or to comply with its treaty obligations, we believe that the Government of the United States should actively use its influence and good offices to restore peace and give independence to the island." With this mandate, McKinley sought to free Cuba, absolutely or practically, while at the same time maintaining peace with Spain. On June 26, 1897, Secretary Sherman sent a note to the Spanish Minister, protesting against the Spanish methods of war and asserting that "the inclusion of a thousand or more of our own citizens among the victims of this policy" gives "the President the right of specific remonstrance, but in the just fulfillment of his duty he cannot limit himself to these formal grounds of complaint. He is bound by the higher obligation of his representative office to protest against the uncivilized and inhuman conduct of the campaign in the island of Cuba. He conceives that he has a right to demand that a war, conducted almost within sight of our shores and grievously affecting American citizens and their interests throughout the length and breadth of the land, shall at least be conducted according to the military codes of civilization." Negotiations between the United States and Spain have always been peculiarly irritating, owing to temperamental differences between the two peoples. McKinley, however, had in mind a program for which there was some hope of success. He was willing to agree to some form of words which would leave Spain in titular possession of the island, thereby making a concession to Spanish pride, for he knew that Spain was always more loath to surrender the form than the substance. This hope of the President was strengthened, towards the end of 1897, by a dramatic incident in the political life of Spain. On the 8th of August, the Spanish Prime Minister, the Conservative Antonio Canovas del Castillo, was assassinated, and was succeeded on the 4th of October by the Liberal, Praxedes Mateo Sagasta.