Sam Rose, the acting director of the UNRWA in Gaza, has described the situation in Gaza as “horrific”.

“What’s happened over the last couple of days in a war […] that we thought couldn’t plumb to new depths and things couldn’t get any worse, we’re seeing a new side of that,” Rose tells Al Jazeera from Oxford, UK.

“This is what people have been reduced to, literally to herded animals in pens,” he said, referring to the recent killings at aid distribution points of the US-backed Gaza Humanitarian Foundation.

Rose warned that if “these scenes” did not prompt action from those “that have the influence to take action, then we’re lost”.

“We cannot comprehend any more what’s going on, what people are being put through in Gaza. It’s completely unimaginable and completely unacceptable,” he added.