The United Nations’ top aid official is warning Syria’s humanitarian crisis is getting worse. Speaking to reporters, emergency relief coordinator Valerie Amos said aid workers have been unable to reach around a quarter of a million people trapped in besieged areas.

Valerie Amos: “Our figures are that about 250,000 people are in besieged communities, so this is communities that we are not able to reach at all, and 2.5 million people in hard-to-reach areas. So, they may have been reached, for example, once with assistance, and no more.”