Protesters gather in front of the Greek Parliament during a peaceful rally against plans for new austerity measures in central Athens on Monday. Standard & Poor's international credit rating agency on Monday further slashed the debt-ridden country's rating, warning that Greece was more likely to default. (AP photo) ATHENS, Greece – Standard & Poor's cut Greece's credit rating deeper into junk territory Monday, saying the country is likely to default on its massive debts at least once by 2013 – a decision Athens said ignored its efforts to secure continued funding in coming years