He was instrumental in the establishment of relations between the two countries under the reigns of Russia's Tsar Nicholas II and Siam's King Chulalongkorn (Rama V).
Olarovsky previously served as consul-general to the United States in San Francisco and in New York, and was appointed as chargé d'affaires and consul-general to Siam in December 1897, following the establishment of diplomatic relations during Chulalongkorn's visit to Russia that year.
[2] Olarovsky's posting was a significant attempt to further Russia's influence in the region by supporting Siam against French and British colonialist encroachment.
[3] A declaration of friendship between Russia and Siam was signed by Olarovsky and Prince Devawongse (the Siamese Foreign Minister) in 1899, which granted temporary extraterritoriality to the handful of Russian subjects in Siam, though it never developed into a full treaty.
[3] Olarovsky was a skilled diplomat and a prominent member of the expatriate community in Siam.