Mon Dec 1 ECB could fix euro zone flaw with risk-free bond - think tank Written by Editor Published in News Feeds LONDON (Reuters) - As the European Central Bank comes closer to buying sovereign bonds, one London-based think tank says an opportunity has arisen to fix one of the euro zone's birth defects -- the absence of a credible "risk-free" asset.Read more http://uk.reuters.com/article/2014/12/01/uk-markets-ecb-eurobonds-idUKKCN0JF1C120141201?feedType=RSS&feedName=topNews