The siege followed the failed attempt by Ferdinand I of Austria to recapture Buda in 1542.[8] It would be followed in turn by the capture of the Hungarian coronation city of Székesfehérvár in September 1543.[1] Other cities that were captured during this campaign are Siklós and Szeged in order to better protect Buda.[8] However, Suleiman refrained from moving further on to Vienna this time, apparently because he had no news of the campaigns of his French allies in western Europe and in the Mediterranean.[9]