 By the end of the 17th century the Republic of Venice was losing ground in its constant diplomatic and military struggle with the Turkish Empire, so there was great need for diplomats such as Carlo Ruzzini who had both the education and the requisite personal fortune to qualify for the diplomatic service.Starting his career of public service at 26 running the Venetian Arsenal and dockyard, Carlo Ruzzini became a diplomat and was sent as Ambassador to Madrid in 1691.As the ambassador to Vienna, in July 1698 he was organizing the visit of the Russian Tsar Peter the Great to Venice, but that tour was failed because of the Streltsy revolt in Moscow.