The UK has temporarily withdrawn staff from its embassy in Tehran, as the threat of US strikes against Iran prompts warnings from a number of countries to their citizens in the Middle East. The UK Foreign Office said it was a "precautionary measure" and that its embassy in Iran's capital continued to operate remotely. Meanwhile, the US embassy in Israel told some non-emergency staff and their families on Friday that they could leave the country. US Ambassador to Israel Mike Huckabee advised staff who wished to leave to "do so TODAY", the New York Times reported. It comes a day after Washington and Tehran held talks widely seen as a last ditch effort to avoid a war over Iran's nuclear ambitions. A number of other countries including China, India and Canada have told their citizens to leave Iran as soon as possible due to the prospect of hostilities.…