Any tweaks to the draft could further delay an agreement to formally end the Middle East war and reopen the Strait of Hormuz after weeks of fraught negotiations marked by sharp rhetoric and occasional flare-ups of violence.

The US said it was on the verge of a deal with Iran after Friday's negotiations. What are the roadblocks?

US President Donald Trump met advisers on Friday to discuss extending the ceasefire with Iran but did not make a final decision, according to reports in the US media.