The United States has issued a warning to its citizens in Iran, urging them to leave the country immediately. The advisory, released by the United States virtual embassy in Tehran, recommends that citizens consider departing Iran by land to neighboring Turkey or Armenia if it is safe to do so. This comes amid widespread anti-government demonstrations in Iran, which are the largest the country has seen in years. The situation remains fluid as the United States government deliberates its response to the ongoing unrest.