The United Nations has said it estimates that 10.25 million Syrians, or half the country's population, will need humanitarian aid by the end of this year.
It also estimates that the cost of this aid will top $5 billion (£3.2bn) this year.
The announcement comes as the UN launches the largest fundraising appeal in its history.
Half the population at the Zaatari refugee camp are children. After escaping violence at home they are now growing up on the edge of war.
In my second special report, I see how charities in Zaatari are working with Syrian children to try to numb the painful trauma of war.
Zataari, a Syrian camp for more than 100,000 refugees, is a place so desolate that only the truly desperate would call it home.