Editors. "Turkish attack on Austria". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14417, accessed 13 December 2013.]
In the wake of the 'Protestation' signed against the decisions of the Diet of Speyer by a group of Lutheran princes, Germany seems threatened by the possibility of civil war. However, for the moment this is averted by an external threat, namely a Turkish attack on Austria.