Water may be the new weapon in Syria, where more than seven million people have been forced from their homes by civil war.
Every ration card is a lifeline for families who escape with their lives from the fighting in Western Syria.
They are relatively safe in the city of Damascus, but destitute.
The United Nations World Food Programme gives them basic staples, but as international donations dwindle, so do the rations.
What used to be one month's worth, now has to last for two.
Refugees are forced to squat in unfinished buildings which have no water. Meanwhile UNICEF works to bring the minimum for washing and drinking.
Watch the video for the full CBS report.