Negotiators from Iran and the United States are set to meet again in Oman on April 26, prompting hopes the two countries might be moving, albeit tentatively, toward a new nuclear accord.The scheduled talks follow the two previous rounds of indirect negotiations that have taken place under the new Trump administration. Those discussions were deemed to have yielded enough progress to merit sending nuclear experts from both sides to begin outlining the specifics of a potential framework for a deal.The development is particularly notable given that Trump, in...