The BBC's Safa AlAhmad is one of few journalists to have reached the besieged city of Taiz, at the heart of Yemen's civil war. She found a city destroyed by shelling - and a doctor struggling to save the life of a six-year-old girl. At the al-Thawra hospital in the besieged city of Taiz, doctors gather outside the operating room to discuss which of their patients will be left to die. Without enoug