The FBI announced it was investigating the alleged leak of classified US intelligence documents about Israel’s plans for a retaliatory strike on Iran. Iran has been bracing for a response since it unleashed a wave of close to 200 ballistic missiles on Israel on 1 October in retaliation for the assassination of Hamas leader Ismail Haniyeh in Tehran and Hassan Nasrallah, head of the Iranian-allied Hezbollah, in Beirut. The classified documents, circulated on the Telegram app last week by an account called Middle East Spectator, describe Israeli preparations for a possible strike — but do not id…