this is bbc world news broadcasting to viewers in the uk and around the globe. i'm lewis vaughan jones. our top stories: the taliban seizes a provincial capital in southern afghanistan, as the un's envoy demands the militants end their offensive. we are extremely concerned about the safety and security of people in cities under taliban attacks and what brutality would await them. at the olympics, it's another gold medalfor team gb as galal yafai beats carlo paalam of the philippines in the flyweight boxing. tom daley wins bronze in the 10m platform final, gb�*s 60th medal of the games. nearly half the regions in greece are on high alert,