Abstract
Why have France and Germany adopted divergent – and shifting – policies on disclosing their military aid to Ukraine? We argue that domestic politics, not international signaling or political culture, best explains this puzzle. We theorize that leaders use transparency as a legitimation tool to manage audience costs when their policy preferences diverge from a hawkish public. Conversely, when leader and public preferences align, policymakers revert to strategic ambiguity. Using a most-similar comparison of France and Germany, employing qualitative Bayesian reasoning, we find strong support for our argument. Germany shifted to transparency under Chancellor Scholz following domestic pressure, a policy reversed by Chancellor Merz once preferences realigned. France maintained secrecy while elite and public opinion converged, only partially disclosing aid after domestic criticism. Our findings highlight domestic legitimation strategies in shaping foreign policy secrecy and contribute to the literature on secrecy in foreign policy and on military assistance to Ukraine.