Answer
Mariano Rajoy, Then Prime Minister of Spain, was the target of Carles Puigdemont's attempts at dialogue. Puigdemont, as the President of Catalonia, sought to engage in discussions and negotiations with Rajoy to address the political tensions and disagreements between the Catalan government and the Spanish central government. However, their dialogue efforts ultimately proved unsuccessful, and the situation escalated, leading to significant political and legal consequences.