 The greatest intensity of Cossack raids, reaching as far as Sinop in Turkey, fell on the 1613 – 1620 period. The Ukrainian magnates on their part continued their traditional involvement in Moldavia, where they kept trying to install their relatives (the Movileşti family) on the hospodar's throne (Stefan Potocki in 1607 and 1612, Samuel Korecki and Michał Wiśniowiecki in 1615). Ottoman chief Iskender Pasha destroyed the magnate forces in Moldavia and compelled Stanisław Żółkiewski in 1617 to consent to the Treaty of Busza at Poland's border, in which the Commonwealth obliged not to get involved in matters concerning Wallachia and Transylvania.
