S. Korea's KDB says buying Lehman a possibility By Kim Yeon-hee SEOUL (Reuters) - State-run Korea Development Bank KDB.UL said on Friday that Lehman Brothers Holdings Inc (LEH.N: Quote, Profile, Research, Stock Buzz) is one of its options for acquisitions, as the struggling U.S. investment bank considers securing much-needed capital from investors. The potential interest lifted Lehman's shares 11.3 percent, a day after a report said KDB and another Asian investor had walked away from a potential deal with the U.S. investment bank. KDB said Friday it was open to mergers or acquisitions of both domestic and foreign companies to...