a congratulatory note to Warsaw, caused further worry in Prussia. The Prussian statesman Ewald von Hertzberg expressed the fears of European conservatives: "The Poles have given the coup de grâce to the Prussian monarchy by voting a constitution", elaborating that a strong Commonwealth would likely demand the return of the lands that Prussia acquired in the First Partition. Finally, Prussian-Russian relations stabilised with the end of the Triple Alliance, which was cemented by the British-Netherlands-Prussian-Russian treaty of 26 July 1791 in which the Triple Alliance de facto capitulated to all Russian demands. In the meantime, similar negotiations of a never-realised Polish–Swedish alliance fell through as well. Aftermath The Treaty of Jassy in January 1792 ended the Russian war with the Ottomans, and in April, the First Coalition wars began, forcing Prussia to move the bulk of its forces west to deal with Revolutionary France. Russia, angered by Poland's attempt to move out of its influence, invaded Poland in May. Around then, Prussian policy was already set against Poland. Rather than discussing how to aid it, Frederic Wilhelm and his ministers were discussing how to convince Austria and Prussia to a new partition. Lucchesini has already made several declarations that Prussia could not aid the Commonwealth, and in June that year, Potocki's mission to Berlin received a confirmation, motivated on the grounds that the 3 May Constitution changed Poland so much that Prussia did not consider its obligations binding. Prussian Foreign Minister Friedrich Wilhelm von Schulenburg-Kehnert clearly and with rare candor told Potocki that Prussia did not support the constitution but could not say so initially to avoid any Polish-Russian reconciliation and would not help even as a mediator, as it is not in Prussian's interest of the state to see Poland so strengthened that it could later threaten Prussia. In January 1793 a Prussian corps entered Greater Poland, it was not as a Commonwealth ally but instead to guarantee Prussia's share of spoils in the Second Partition of Poland. Prussian forces were acting in support of the Prussian-Russian Treaty on the partition that month. Prussian forces later assisted Russians in several key battles of the Kościuszko Uprising, such as in the defeat of Tadeusz Kościuszko's forces at the Battle of Szczekociny. By 1795, Commonwealth would cease to exist, with Prussia acquiring Gdańsk, Toruń and other territories that it had desired (see Prussian partition). Historiography The issue of the Polish–Prussian alliance