Can Turkey ease Ukraine/Russia tensions?

The Turkish president, Recep Tayyip Erdogan, is visiting Kyiv as diplomatic efforts to ease the crisis sparked by the massing of Russian troops on Ukraine's border continue. Also: shares in Spotify and a number of social media companies have suffered big falls; and the illegal Brazilian gold you may be wearing. (Picture: Russian TV has shown pictures of tank exercises close to the border with Ukraine Credit: Russian Defence Ministry)