The British foreign secretary says President Putin himself must have ordered the use of a nerve agent on British streets. We hear from our correspondent in Moscow and the Secretary General of NATO. Also in the programme: We hear from a resident in Eastern Ghouta as the Syrian government launches new strikes. And Uganda born Jennifer Makumbi wins a big American literary prize. (Photo: United Kingdom flag flying outside the embassy in Moscow. Credit: Mladen Antonov/AFP/Getty Images)