Iran’s Ambassador to the UK, Mohsen Baharvand, was summoned to the Foreign Office to be told his country must immediately cease actions that threaten international shipping. Iran has issued an angry denial, demanding to see proof of its alleged complicity in the attack. Its foreign ministry has issued its own summons to Britain’s ChargĂ© d’Affaires in Tehran, calling the accusations made by Britain, Israel and the US “baseless propaganda”.