The uncompromising attitude of the Revolutionists, and the hopelessness of any attempt at amicable adjustment of affairs, was at this time strikingly shown in a tragic incident. It was in December, 1897. There was in Havana a young Spanish officer named Joaquin Ruiz, who had formerly served as a civil engineer, and had been intimately associated with Nestor Aranguren, another young engineer who had become a leader of the Revolutionists and had made himself particularly active and annoying to the Spanish in the Province of Havana. The two were close friends, and were both men of charming personality. The Spanish authorities in Havana determined to use this friendship in an attempt to seduce Aranguren into betraying or at least deserting the patriot cause. So Ruiz was directed to open a correspondence with Aranguren, with a view to securing a personal interview with him. Aranguren wrote to Ruiz that he would be glad to meet him personally, but could not do so if he came on any political errand; and he warned him that for him to come to the Cuban camp with any proposal of Cuban surrender or acceptance of autonomy would subject him to the penalty of death, which would infallibly be carried out. Despite this warning, and presumably against his own better judgment, Ruiz obeyed the orders of his superiors, and undertook the errand. He had no safe conduct. He bore no flag of truce. He went through no agreement between the commanding officers of the respective sides. He went in the circumstances and manner of a spy; and his purpose was to persuade, if possible, a Cuban officer to betray his trust and become a traitor to his own cause.