Goldman is sued in U.S. over merger linked to Malaysia's 1MDB

By Jonathan Stempel NEW YORK (Reuters) - Goldman Sachs Group Inc was sued on Tuesday by a major shareholder of a Malaysian bank it once advised, and which accused the Wall Street bank of fraudulently shortchanging it in a merger to curry favor with that country's prime minister. In a complaint filed with the New York State Supreme Court in Manhattan, Primus Pacific Partners said it was seeking $510 million of damages from Goldman and former Managing Director Tim Leissner, after the bank conceale