Ruth Sherlock

In her simple home in a settlement in Lebanon's Bekaa Valley, next to tents sheltering other refugees from the war in Syria, Raja talks about the time when two young German men arrived at her door several months ago. They told her they were researchers for a charity.

"They seemed fine," Raja says. "They just wanted to come in and film the house. We said, 'We have nothing to hide.' They filmed everything, even the kitchen."

Raja, who is afraid to give her full name, says she wouldn't have let the men in if she'd known how the footage would be used.

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Hundreds of Syrian rescue workers from the United States-backed White Helmets group have been evacuated through Israel into Jordan, escaping an onslaught by the regime of Syrian President Bashar Assad on one of the last opposition strongholds in the country.

Hala hugged her 10-month-old baby close as she sat in the front seat of the pickup truck piled with the family's few possessions — thin mattresses, blankets, a small suitcase — as she waited to cross into Syria.

She had dressed neatly for the journey, in a carefully pinned maroon headscarf and black abaya gown. She tried to think of the positives: Her family would no longer be strangers in a foreign land; her children would set foot in their home country for the first time.

But as her convoy began to move toward the Syrian border, her nerve wavered.

Seema heard the children on the upper floors of the house scream "chlorine, chlorine!" Amina says she felt gas hit her lungs. Abu Faisal found himself caught in a yellow-tinged cloud.

These are just some of the testimonies collected by NPR from now former residents of Douma, a town outside the Syrian capital Damascus, who say that on the night of April 7, they endured the terrifying experience of a chemical weapons attack.

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So that's a brief timeline of how we got to this moment. Let's turn now to where we may go next. I'm joined here in the studio by NPR Pentagon correspondent Tom Bowman. Hey, Tom.

TOM BOWMAN, BYLINE: Hello.

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