Market sources: In Switzerland the US will press Iran to allow UN nuclear inspectors back into key nuclear sites, using the unfreezing of tens of billions of dollars of frozen Iranian assets as the primary incentive. The issue is expected to be one of the most critical in the first round of talks.

Russia's defence ministry said its air-defence forces used on-duty systems to intercept and destroy 239 Ukrainian drones overnight.

On June 20 in Cairo, the foreign ministers of Egypt, Saudi Arabia and Turkey met with a US senior presidential adviser for Arab and Middle East affairs to discuss regional security, including Iran. An Egyptian foreign ministry statement said participants urged building on the US-Iran memorandum of understanding to sustain de-escalation and promote regional stability. They also discussed developments in Libya and Gaza and exchanged views on enhanced cooperation to support security and stability in Africa.