The content originally appeared on: CNN London/New York (CNN Business)The European Central Bank is holding an unscheduled meeting Wednesday to discuss a sharp bond market sell-off that has revived memories of the region's debt crisis more than a decade ago. The bank would hold the 'ad-hoc' meeting to discuss 'current market conditions,' according to a spokesperson for the central bank. The meeting was reportedly due to begin at 5 a.m. ET. The ECB left interest rates unchanged at its regular […]