In Yemen, more than 900 prisoners were released this past week as momentum builds to end the nine-year conflict there. This is linked to the fact that the leadership in Saudi Arabia and Iran are talking to each other again. The two powers broke off relations seven years ago, impacting politics and conflict across the region. So now that diplomatic ties have been restored, what might change? We take a closer look and speak to Julien Barnes-Dacey, the Middle East Programme Director at the European Council on Foreign Relations.