The first day of Ramadan brought hope to Yemen with the start of a two-month truce. But a few days in, warring sides have already traded accusations of ceasefire violations. Nonetheless, the fragile truce offers the best hope in years for ending what the UN has called the world's worst humanitarian crisis. Now in its eighth year, the war in Yemen has killed nearly 400,000 people and left millions on the brink of famine. For more on this story, we speak to Dr Elisabeth Kendall, a senior research fellow at Oxford University.