Most Unitarians established themselves in Montevideo. In their writings they criticized Rosas, calling him a ruthless dictator and accusing him of many crimes. These statements were not intended for merely local effect but were designed to promote a European intervention in the conflict. José Rivera Indarte wrote a work called "Blood Tables" (Tablas de Sangre) which was published in Europe. It was intended to be a complete list of the known victims of Rosas. It attributed more than 22,000 deaths to his government. The Argentine politician Manuel Moreno considered this work to be libel. The reports from Montevideo were echoed in France, as many French citizens resided in Montevideo at that time. Alexandre Dumas wrote the novel "Montevideo, or the New Troy" based on the reports of Melchor Pacheco. Adolphe Thiers urged François Guizot to intervene in the conflict. On its own initiative France imposed a blockade of the Río de la Plata between 1838 and 1840, which was followed in 1845 by a joint blockade with Great Britain.