The cancellation of the talks came as Israel and Hezbollah traded their most violent strikes since the ceasefire was established. Hezbollah targeted Israeli forces near the city of Nabatieh, in south Lebanon, with several salvoes of rocket fire and drones overnight after intermittent Israeli shelling throughout Thursday.

The talks had been due to begin in the Swiss village of Obbürgen two days after the signing of a memorandum of understanding (MoU) that opened a 60-day window to negotiate a permanent understanding over Iran’s nuclear programme, while getting oil traffic moving through the strait of Hormuz.

Hezbollah said it was targeting Israeli forces that were trying to advance towards the foothills surrounding Nabatieh – a flashpoint where there has been intermittent fighting since the US-Iran ceasefire was announced. Prior to the truce, Israeli forces were advancing towards the southern Lebanese city.