First French edition: France's apology of its controversial Franco-Turkish alliance. On the eve of yet another war between the Habsburg and the Valois empires, François I sent a French delegation, led by Cardinal Jean du Bellay, to the Diet of Speier (1544) in an attempt to justify the Franco-Turkish alliance and to obtain support among the German Protestant princes. François I's effort to gain support in Germany was largely unsuccessful as his ally Sulayman I was laying waste to Hungary in 1543, and had ordered the corsairs of Barbary to raid the lower Italian provinces of the Empire. A Latin translation of the speech was published in the same year, also by Robert Estienne who as royal printer had to produce this ephemeral literature, as well as his scholarly texts. Armstrong in her seminal book, ‘Robert Estienne, Royal Printer’ (Cambridge, 1954) points out, that the French translation of these speeches and letters ‘makes this group of books the most considerable element of vernacular printing in [Robert's] career’ (p. 145). Second work: First edition of this collection of speeches and letters justifying French foreign policy. Among them the document announcing the Franco-Turkish alliance of 1536 (pp. 167-174), and letters to the Protestant princes of the Schmalkalden league offering French support.