Hello, this is Gail Krishnan writing to you from Singapore. Welcome to today's edition of CNBC's Daily Open. On Wall Street, a rotation out of big tech dragged the S&P and Nasdaq lower. That offset more encouraging newsflow on Iran as the U.S. agreed to waive Iranian oil sanctions for 60 days. Meanwhile, 10 Downing Street will soon get a new occupant, for the seventh time in 10 years. Japan has long held the dubious honor of a revolving door of prime ministers. But on the 10th anniversary of