Italy’s president has summoned the prime-minister-elect Romano Prodi to ask him to form a new government.A statement from Giorgio Napolitano’s office said the centre-left leader was being called to receive the mandate. A vote of confidence on his line-up is expected in both houses of parliament over the next week. The former EU Commission boss narrowly defeated outgoing prime minister Silvio Berlusconi’s centre-right bloc in the general election in early April. Prodi has had difficult talks trying to reconcile the demands of his diverse coalition partners. Reports indicate his foreign minister will be Massimo D’Alema, a former prime minister.