File zoom-burst image shows the illuminated euro sign in front of the headquarters of the European Central Bank (ECB) in Frankfurt April 5, 2011. German Chancellor Angela Merkel hailed Dec 13, 2012, an agreement clinched by EU finance ministers on giving the European Central Bank new powers to supervise euro zone banks and said Germany's core demands had been met. The 27 ministers agreed early on Thursday after lengthy negotiations to grant the ECB the authority to directly police at least 150 of the euro zone's biggest banks and intervene in smaller ones at the first sign of trouble. [Photo/Agencies]

A man stands as pigeons fly during a ceremony marking the 75th anniversary of the start of the Nanjing Massacre at the Nanjing Massacre Museum, Jiangsu province Dec 13, 2012. [Photo/Agencies]