in the uk, a vigil has been held to remember the victims of thursday's mass shooting — the country's worst since 2010. police have now named the victims. and much of southern europe continues to bake after one of the hottest summers ever recorded. the rapid advance of the taliban in afghanistan is accelerating. the militants now control a third of the country's regional capitals, including afghanistan's second largest city, kandahar. american officials say the taliban is trying to isolate the capital, kabul. and they've acknowledged that the insurgents may be back in power much sooner than expected. meanwhile the united nations has warned a �*humanitarian catastrophe�* may be unfolding. our correspondent, yogita limaye reports from kabul. gunfire.