Spain will see its borrowing costs leap when it sells short-term debt on Tuesday, a day after investor concern over its deficit and banking sector pushed longer term risk premiums above 6 percent, threatening a new crisis in the euro zone. The auction of 12- and 18-month Treasury bills will test market nervousness, which has spread to Italy, before a more challenging sale on Thursday of 2-year and 10-year bonds. Yields on the latter climbed over 6.1 percent on the secondary market on Monday, a five-month high, as investors fled to safe-haven German Bunds, where yields were at their lowest since 2008 when the euro ... (full story)