Yemen has a "massive humanitarian crisis."
20.4 million can't get clean water.
15.2 million don't have basic health care.
1.6 million women and children lack proper nutrition.
Since March 26: 1,693 civilians killed and 3,829 wounded.
And disease outbreaks put even more lives at risk.
Fuel is scarce.
If you can find it, you have to wait in line.
The United Nations has trouble accessing almost all of Yemen's provinces.
But in July, after months of intense clashes with Houthi rebels, pro-government forces secured the southern port city of Aden.
An aid ship with the U.N. World Food Program docked in Aden on July 21, the first such relief in months.
It carried 3,000 metric tons of food — enough to feed 180,000 people for one month.
But 12.9 million people don't know when they'll eat their next meal.
And for the first time since Aden was captured in March, an aircraft landed at the city's airport.
Now, more humanitarian aid is expected to reach the city and southern Yemen in the coming months.
This video includes music from Yinyues / CC BY 3.0.