Here ‌are the key issues the two sides are expected to discuss, with Tehran insisting that formal talks can begin only after Washington gives commitments on a ceasefire in Lebanon and lifting ​sanctions on Iran.

• Iran wants a ceasefire in Lebanon, where Israeli attacks on ​Hezbollah members have killed nearly 2,000 people since the ⁠start of the fighting in March. Israel and the US have said the ​Lebanon campaign is not part of the Iran-US ceasefire, while Tehran insists it is.
• Iran ​wants the US to unblock Iranian assets and end sanctions that have crippled its economy for years. Washington has indicated that it is open to significant sanctions relief but only ​in exchange for concessions from Iran on its nuclear and missile programmes.
• Iran wants ​acknowledgement of its authority over the Strait of Hormuz, where it aims to collect transit fees ‌and ⁠control access in what would amount to a huge shift in regional power. The US wants it opened for oil tankers and other traffic without any limitations, including tolls.
• Iran is expected to demand compensation for all damage during the six-week ​war. The US ​has not commented ⁠on this.
• Iran wants to be allowed to enrich uranium, which Washington has ruled out and President Donald Trump has insisted ​is non-negotiable.
• Israel and the US both want Iran’s missile capabilities ​to be ⁠dramatically curtailed. Tehran has said its formidable missile arsenal is non-negotiable.
• Iran wants the withdrawal of US combat forces from the region, cessation of war on all fronts and a ⁠commitment ​to non-aggression. Trump has vowed to retain military ​assets in the Middle East until a peace deal is reached and warned of a major escalation ​in fighting if it failed to comply.