Time is slipping away for the Indo-US nuclear deal, as India remains locked in talks with the International Atomic Agency. At a crucial meeting with Prime Minister Manmohan Singh, that took place on Wednesday, three US Senators, conveyed a clear-cut deadline on the nuclear deal. The Senators, two of them influential democrats, told the PM that the deal must reach the US Congress latest by May or early June, otherwise it would not be cleared by the current Congress.