ROME (Reuters) – Italy’s rightist alliance looks sure to win a parliamentary majority following Sunday’s election, but its three main parties have different positions in important areas, which could hobble their administration. Here are some of the main potential sources of tension between Giorgia Meloni’s Brothers of Italy (FdI), Matteo Salvini’s League and Silvio Berlusconi’s Forza Italia. EUROPE Brothers of Italy and the League have both called in the past for Italy to leave the euro zone, while Forza Italia has usually presented itself as a moderate, pro-European force. Meloni and Salvini …