Overview: Channel 4's multi-award winning Unreported World returns with a powerful new episode from Yemen revealing the catastrophic effect of the Saudi-led coalition's bombing campaign, which is being carried out using British-supplied weapons. The bombing, together with a naval blockade on Yemen's major port, has resulted in a humanitarian emergency threatening millions with starvation. Reporter Krishnan Guru-Murthy and director Patrick Wells are the first international crew to film in Hodeidah port, which is critical to Yemen's food imports and has been disabled by bombing.