In the U.S.-Iran talks - the two sides say they've reached an understanding on "guiding principles" in efforts to resolve their long-running nuclear dispute. Still - expectations aren't high - as Sky's international correspondent Dominic Waghorn reports. Read more: https://news.sky.com/story/trump-warns-iran-of-consequences-of-failing-to-reach-nuclear-deal-13508423 #skynews #worldnews #iran #usnews SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on