It was the most expensive real estate deal in U.S. history. Now it’s poised to become one of the biggest flops, The Associated Press writes. At the height of the real estate bubble in 2006, an investment group led by New York City real estate firm Tishman Speyer Properties and BlackRock Realty Advisors paid $5.4 billion for a pair of gigantic Manhattan apartment complexes known as Stuyvesant ...