What makes U.S.-Iran Islamabad talks distinct, difficult

The Iranian and U.S. delegations for peace talks arrived here Saturday and would hold negotiations later.

After more than 40 days of intense hostilities, the two rivals are finally coming to the negotiating table. While U.S. President Donald Trump stated that the outcome of the talks would become clear "within 24 hours," analysts believe that, given the hardline stances of both Washington and Tehran and their sharp differences on key issues, the negotiations are highly uncertain.