The devastating war in Yemen has just entered its fifth year.
And why it's time for the UK to act.
Two million children aren't in school in Yemen.
That's more than a quarter of the school-age population.
Girls are disproportionately losing out; 36% compared to 24% of boys unable to attend school.
Our Country Director for Yemen, Mona Saleh, says "children are having their futures stolen by being denied access to education".