This week saw the UK announce the largest expulsion of Russian diplomats since the Cold War. The move came in response to a nerve agent attack on British soil, believed to be ordered by Russia. Our panel discusses the strained relationship between the two countries. Also on the weekly roundup, we look at Syria's seven years of brutality, Rex Tillerson's early departure from the State Department, Colombia's election results and the untimely passing of physicist Stephen Hawking. Produced by Michele BARBERO, Tommaso MAZZANTI and Laura BURLOUX.