Western governments under fire for lack of transparency in Syria WMD claims

The United States, Britain and France have supplied the United Nations with a trove of evidence, including multiple blood, tissue and soil samples, that U.S. officials say proves that Syrian troops used the nerve agent sarin on the battlefield. But the nature of the physical evidence — as well as the secrecy over how it was collected and analyzed — has opened the administration to criticism by independent experts, who say there is no reliable way to assess its authenticity…

But no inspectors have been allowed inside Syria, so Western governments have relied on physical evidence smuggled out of the country by rebels or intelligence operatives. Precisely who acquired the evidence and what methods were used to guard against tampering may be unknowable, according to experts experienced at investigating chemical weapons claims.

“You can try your best to control the analysis, but analysis at a distance is always uncertain,” said David Kay, a former U.N. weapons inspector who led the U.S. search for weapons of mass destruction in Iraq after the 2003 invasion. “You’d be an idiot if you didn’t approach this thing with a bit of caution.”