Good evening and welcome to our live coverage of the events in the Middle East.
Here are the key developments today:
• Iran's Revolutionary Guards navy said early on Sunday it had closed the Strait of Hormuz until further notice after firing a warning shot at a vessel it said had attempted to transit along an unapproved route, state media reported.
• In the first message since Ayatollah Ali Khamenei's funeral, Iran's supreme leader Mojtaba Khamenei vowed revenge for the killing of his father, hours after President Donald Trump threatened to "decimate" Iran if the regime tried to kill him.
• Both sides dialled up the rhetoric after exchanges of fire this week rocked a memorandum of understanding reached in June this year between Washington and Tehran.
• In an attempt to keep diplomacy alive, Iran's top diplomat Abbas Araghchi is in Oman for talks on the Strait of Hormuz
• In Lebanon, meanwhile, Israeli strikes persisted overnight, including an airstrike targeting the outskirts of Nabatieh.