Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: The fast-talking and charismatic Mayor of Florence Matteo Renzi managed to torpedo his fellow Democratic Party colleague Enrico Letta at a make-or-break leadership meeting in Rome.

Italian PM 'torpedoed' by 'boundlessly ambitious' mayor