US forces are continuing to build up in and around the Middle East ahead of a possible attack on Iran. Sky's defence analyst, Professor Michael Clarke, looks at what US assets are in or heading to the region and what could happen next. Global updates: https://news.sky.com/story/ukraine-war-latest-kyiv-must-leave-donbas-as-path-to-peace-putin-envoy-says-12541713 #iran #middleeast #donaldtrump #iranattack #usmilitary SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews