What was the russian empire under during the Polish–Russian War of 1792?
Second Partition of Poland:  The second partition occurred in the aftermath of the War in Defense of the Constitution and the Targowica Confederation of 1792, and was approved by its territorial beneficiaries, the Russian Empire and the Kingdom of Prussia. Polish–Russian War of 1792: The Polish–Russian War of 1792 (also, War of the Second Partition, and in Polish sources, War in Defence of the Constitution (Polish: "wojna w obronie Konstytucji 3 maja" )) was fought between the Polish-Lithuanian Commonwealth on one side, and the Targowica Confederation (conservative nobility of the Commonwealth opposed to the new Constitution of 3 May 1791) and the Russian Empire under Catherine the Great on the other.
Catherine the Great