U.S. Vice President Joe Biden, right, and Italian Premier Mario Monti review the honor guard at Rome's Chigi palace Premier's office, Monday, March 18, 2013. Joe Biden led the U.S. delegation to newly elected Pope Francis' installation in Rome. (AP Photo/Alessandra Tarantino)
U.S. Vice President Joe Biden, right, and Italian Premier Mario Monti review the honor guard at Rome's Chigi palace Premier's office, Monday, March 18, 2013. Joe Biden will lead the U.S. delegation to newly elected Pope Francis' installation in Rome. (AP Photo/Alessandra Tarantino)
U.S. Vice President Joe Biden, right, and Italian Premier Mario Monti review the honor guard at Rome's Chigi palace Premier's office, Monday, March 18, 2013. Joe Biden led the U.S. delegation to newly elected Pope Francis' installation in Rome. (AP Photo/Alessandra Tarantino)
Italian Premier Mario Monti (left) and former Premier Silvio Berlusconi shake hands in Milan on Sunday, Jan. 27, 2013. (AP Photo/Antonio Calanni)
Italian Premier Mario Monti (left) and former Premier Silvio Berlusconi shake hands in Milan on Sunday, Jan. 27, 2013. (AP Photo/Antonio Calanni)
Italian Premier Mario Monti speaks during a press conference at the Italian Senate in Rome on Dec. 28, 2012. Monti announced he is heading a new campaign coalition made of up centrists, businessmen and pro-Vatican forces, paving the way for his possible return to office if it wins enough seats in February parliamentary elections. (Associated Press)
Italian Premier Mario Monti speaks during a press conference at the Italian Senate in Rome on Dec. 28, 2012. Monti announced he is heading a new campaign coalition made of up centrists, businessmen and pro-Vatican forces, paving the way for his possible return to office if it wins enough seats in February parliamentary elections. (Associated Press)
Italian Premier Mario Monti said during a news conference in Rome on Sunday, Dec. 23, 2012, that he won't take up former Prime Minister Silvio Berlusconi's offer to run on a center-right election ticket, citing Mr. Berlusconi's heavy criticism of his economic policies. (AP Photo/Mauro Scrobogna, Lapresse)
Italian Premier Mario Monti said during a news conference in Rome on Sunday, Dec. 23, 2012, that he won't take up former Prime Minister Silvio Berlusconi's offer to run on a center-right election ticket, citing Mr. Berlusconi's heavy criticism of his economic policies. (AP Photo/Mauro Scrobogna, Lapresse)
