The US Ambassador to the UN, Mike Waltz, says Trump remains determined to finalise an agreement with Iran today, despite what he described as difficult negotiations, Al Jazeera reports.

Speaking on ABC’s This Week, Waltz said, without providing evidence, that Iranian negotiators have struggled to receive clear guidance from the supreme leader and are “not always on the same page” internally.

Still, he said Trump and the US negotiating team remain confident that a deal can be completed.