As a CNN war reporter, Arwa Damon thought she had seen everything. Then she went to Gaza

In the Syrian civil war she entered Homs through a sewer, and later witnessed the horrors inflicted by ISIS in Mosul. As a senior correspondent for CNN, Arwa Damon covered the worst war zones in the Mideast. But none was as scary as Gaza, which she visited as head of a humanitarian organization: 'I saw the death of the human soul'