President Obama and Secretary of State John Kerry are using this graphic collection of YouTube videos to make their case for war in Syria during closed-door meetings with members of Congress.

The video, posted above, features YouTube highlights posted by pro-rebel forces in Syria claiming to show victims of a chemical weapons attack.

The video posted above is expected to be played Monday at a briefing on Syria for all House members. The meeting will be led by Kerry, Defense Secretary Chuck Hagel and National Security Adviser Susan Rice.

During a visit to Paris, Kerry explained on Sunday that the videos were critical for making the case for action in Syria.

"The vast majority of members of Congress, House and Senate, are undecided and that's why the videos are being shown and the briefings are taking place," Kerry said. "Those videos make it clear that this is not something abstract... Those videos make it clear to people that these are real human beings, real children, parents being affected in ways that are unacceptable."

U.S. Ambassador to the United Nations Samantha Power also promoted the videos on Twitter.

"Such searing suffering," she wrote, linking to the videos. "Such clear evidence."