1928, communications with the islands were fully reestablished, after a clarification had been made that the resumption of service in no way implied renouncing the Argentine right to claim them. During the V Pan American Conference meeting in Santiago de Chile in 1923, the host country proposed to Argentina to limit the arms race of both countries. The Chilean delegation accepted a first proposal from the United States of Brazil, which consisted of a limit of 80,000 tons for warships, but Argentina rejected it and responded with a counterproposal of 55,000 tons as a ceiling for warships. This new proposal did not succeed either, and for this reason diplomatic relations with Chile cooled down during the short administration of Chilean President Emiliano Figueroa. In addition, Chile was militarily rearmed in 1926, in response to what Argentina had done in 1924. There was another Chilean attempt at disarmament by the new president, Colonel Carlos Ibáñez del Campo, but it was also rejected by Argentina. On 24 March 1925, the scientist Albert Einstein and his wife Elsa arrived in Argentina —in the framework of a tour also carried out by Brazil and Uruguay— to stay in the country for exactly one month. It was a remarkable fact that Einstein traveled to Argentina during that period, since with his visit he certified the good state that the country was going through at that time. The scientist, known worldwide for his theory of relativity, came to meet with the Argentine president. He had arrived at an invitation from the University of Buenos Aires and the Argentine Hebraic Society, and during his stay he gave twelve lectures, the vast majority for explain your new theory. On 17 August, the Prince of Wales, Edward of Windsor, heir to the British crown, arrived in Argentina. As a result of his visit and the Maharaja of Kapurthala, Alvear organized an excursion to Huetel (in the partido of 25 May , province of Buenos Aires), to the estancia of Concepción Unzué de Casares (a kind of palace in the style of the France of Louis XIII) in the Argentine pampas, where they heard Carlos Gardel sing. Prince of Wales, the Maharaja of Kapurthala and Prince Umberto of Savoy produced an excess in the expenses foreseen for the events, whose total amount was around 500,000 pesos. Minister Víctor Molina informed the president that the amount has been spent and proposed