RT News - December 19, 2015 (17:00 MSK)

World powers in the UN Security Council unanimously approve a roadmap for peace in Syria - but stumbling blocks along the path remain. It's reported Islamic State has chemical weapons after looting stores in Libya - including sarin gas. We hear exclusively from the cousin of the country's late leader Muammar Gaddafi. The Pentagon says a U.S. air strike that may have killed a number of Iraqi troops could have been a mistake involving both sides.