He cobble together a government. He says will change the face of the country's politics and economy . The 39-year-old leader of the centre-left Democratic Party unveiled his government on Friday and said the broad coalition will bring hope to the economically stagnant country. After formally accepting the mandate to form the government, he said he will waste no time in enacting reform. He has been serving as Florence mayor when he engineered a power grab last week to effectively force fellow Democrat , Enrico Letta , to step down after 10 months at the helm of a fragile ,often-squabbling coalition.