“The U.S. intelligence community has uncovered strong evidence that chemical weapons have been used in Syria. Several blood samples, taken from multiple people, have tested positive for the nerve agent sarin, an American intelligence source tells Danger Room. President Obama has long said that the use of such a weapon by the Assad regime would cross a “red line.” So now the question becomes: What will the White House do in response?
“In March, the Assad regime was accused of using chemical weapons during an attack on the city of Aleppo. The blood samples were taken by Syrian opposition groups from alleged victims of that strike. But American analysts can’t be entirely sure where the blood came from or when the precisely exposure took place.
“‘This is more than one organization representing that they have more than one sample from more than one attack,” the source tells Danger Room. “But we can’t confirm anything because no is really sure what’s going on in country.'”
So … what now?