British nationals should leave the Libyan city of Benghazi immediately “in response to a specific threat to Westerners”, the British Foreign Office said on Thursday. It said the British Embassy in Tripoli had been in contact with British nationals whose details it had. The Foreign Office has been advising against travel to Benghazi and most parts of Libya since September. New travel advice for Libya has been published. On 11 September, US ambassador Chris Stevens and three other Americans died during an attack on the consulate in Benghazi. The ambassador died of smoke inhalation when he was trapped in the burning building, after armed men had stormed the compound.