Iran has accused Israel and the United States of causing delays in the diplomatic process due to a lack of trust and constant shifts in Washington's position.
Iranian Foreign Ministry spokesperson Esmaeil Baghaei said a ceasefire in Lebanon remains an essential condition for any deal aimed at ending the war.
Baghaei also accused the US of violating the ceasefire, while Israeli Prime Minister Benjamin Netanyahu ordered his military to attack targets in Beirut's southern suburbs.
US Secretary of State Marco Rubio spoke separately with Lebanese President Joseph Aoun and Israeli Prime Minister Benjamin Netanyahu to push for a new ceasefire initiative.
The US and Iran have also exchanged strikes in the last few days, escalating tensions in the region.
