Jozef Pilsudski, the Polish statesmen and later first marshal, aligned himself with Petlura and decided to attack Russia in the midst of the Russian Civil Wars. During this attack, which reached as far as Kiev, the armies assaulted the Jewish quarters in each town. Although Pilsudski himself was not considered anti-Semitic, he only acted to stop them after foreign pressure was applied. Approximately thirty thousand Jews were systematically killed before Allied pressure slowed them down. This linked the idea of Polish nationalism with pograms in the mind of the Jews.