Did Iran shoot down Ukrainian plane? And how to cut off drugs gangs

Iran's rejecting suggestions that a Ukrainian passenger jet was brought down by one of its own missiles. <br />We explore how experts have analysed a video of the moment the plane came down, and what's next for the investigation after Western powers say it's 'highly likely' Tehran was responsible.<br /><br />Also today, we ask whether new measures proposed by police inspectors are enough to disrupt county lines drug gangs.