Italy\'s borrowing rates shot up to a new high on Tuesday, breaking through the 7.0-percent warning threshold at a bond sale closely watched by investors worried that the country may need a bailout. The Italian Treasury raised 7.5 billion euros ($10.05 billion) in bonds set to expire in 2014, 2020 and 2022, but the total amount raised fell short of the target of 8.0 billion euros.