Even after the new government of Tsar Nicholas I almost halved his salary in 1827, Kozlovsky remained interested in political events, hoping for active employment during the Russo-Turkish war of 1828–1829, a post as Russian Consul in Hamburg in 1830, and watching the events of the July Revolution of 1830 in France and the Belgian Revolution of the same year. Events in France prompted him to write his "Lettres au duc de Broglie sur les prisonniers de Vincennes", in which he pleaded the innocence of former ministers under Charles X. The Belgian revolution prompted him to write "Belgium in 1830" in the hope of influencing British policy. The work was not published, however, until 1831, by which time it had been overtaken by events.