Poland's neighbors were preoccupied with wars and unable to intervene forcibly in Polish affairs. Russia and Austria were engaged in hostilities with the Ottoman Empire (the Russo-Turkish War, 1787–1792 and the Austro-Turkish War, 1787–1791); the Russians also found themselves simultaneously fighting in the Russo-Swedish War, 1788–1790.[16][17][18][19] A new alliance between the Polish–Lithuanian Commonwealth and Prussia seemed to provide security against Russian intervention, and on 3 May 1791 the new constitution was read and adopted to overwhelming popular support.[16][20][21][22]