India, April 12 -- Have the diplomatic efforts to de-escalate the flare-up between Iran and the US fallen flat again? The outcome of Pakistan-mediated Islamabad talks between Tehran and Washington that lasted for nearly 14 hours doesn't look promising as US vice president and chief US negotiator said in a press conference on Sunday morning that they are going back to the US 'without a deal' after the Iranians refused to accept American terms not to develop a nuclear weapon. Track latest updates on Iran-US talks in Islamabad

Vance did not disclose the details of the high-stakes negotiations publicly, but asserted that the failure to reach a deal was "bad news for Iran" more than for the United States, as the US team headed back without a ...