'Unfit to be President' - Obama on Trump

President Obama has made a scathing attack on the Republican candidate, Donald Trump, saying he is unfit to serve as president. The battle for Aleppo has intensified - we hear from someone living inside the besieged Syrian city. With just a few days to go before the Rio 2016 Olympics start, we report on the uncertain future of the Russian athletes who have been banned because of doping allegations and are contesting their innocence in court.