An American official told you; Two conflicting demands have prevented the negotiations from progressing so far: the Trump administration's insistence that Iran provide concessions on nuclear issues as part of renewed negotiations and Iran's condition that America first lift its naval blockade, release frozen funds and allow it to sell oil. Qatar is trying to convince Iran to allow UN inspectors to visit its bombed nuclear facilities in a confidence-building move that the US is likely to respond to by easing some sanctions.