Back from the dead, Tokyo banks buy into Wall Street

TOKYO (Reuters) - Just a few years ago, Japan’s big banks teetered on the brink of collapse and came to symbolize the moribund state of the world’s No.2 economy. Now, those same financial firms are helping reshape the global banking landscape. Nomura Holdings 8604.T, Japan's biggest brokerage, is snapping up the Asian arm of failed U.S. investment bank Lehman Brothers LEHMQ.PK for up to $525 milli