Mohammed Hussein looks sadly at his wife as she lies in bed in a Jordanian hospital where she is being treated for cancer — far from the devastating war back home in Yemen.

Dawla, too sick to talk, is one of a handful of critically ill Yemenis transported by the United Nations from the rebel-held capital Sanaa to Jordan for treatment.

A year and half ago, Yemeni doctors diagnosed the 40-year-old with thyroid cancer.