It's cost ThyssenKrupp almost 13 billion euros in investment and losses over the past six years. And its failure to sell Steel Americas has now caused a share collapse. It's found a buyer for its U.S. finishing plant but not its steel slab mill in Brazil. To make matters worse it's also been forced to take back an Italian steel plant and an alloy unit it sold to a Finnish steelmaker last year. Shares fell almost 9% after the announcements. Chris Hughes is from Reuters BreakingViews.