The United Nations World Food Programme (WFP) said nearly 2.5-million people – most of them internally displaced by the fighting – need emergency food aid.

But the WFP is only able to reach 1.5-million people as the situation on the ground worsens, it said.

"Food needs are growing in Syria," said Elisabeth Brys, a WFP spokesperson. It is becoming increasingly difficult "to reach the hardest-hit places" after almost two years of continual fighting, upheaval and civil war, she said.