Years of civil war have torn Yemen apart. Fighting has divided the cities, destroyed the economy and triggered a humanitarian crisis. And now, the country is on the verge of an environmental disaster. For 5 years the oil tanker FSO SAFER has laid idle off the coast. On board are more than 1.1 million barrels of oil. As Yemen's Houthi rebels battle with the Saudi-backed government for control of the country, the ship has been left to rust. The United Nations has described the tanker as a ticking time bomb - one that will eventually cause an ecological and humanitarian disaster if nothing is done. But who's to blame? Presenter: Laura Kyle Guests William Lawrence, Professor of Political Science and International Affairs at American University. Hussain Al Bukhaiti, a pro-Houthi journalist. Zeina Khalil Hajj, Executive Director of Greenpeace Middle East North Africa region. - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/ #AlJazeeraEnglish #UN #Yemen