WHITE HOUSE: There Is Evidence Syria Has Used Chemical Weapons
Hagel said that there was evidence the Assad regime had used sarin gas. Production and stockpiling of sarin was outlawed under the Chemical Weapons Convention of 1993.
In the letter to McCain and Levin, the White House said it has evidence of the weapons' use on a "small scale."
Earlier this month, Western diplomats said they had "hard evidence" chemical weapons had been used at least once by the Syrian army. Britain and France submitted information to the UN about allegations of chemical weapon use in the cities of Homs last December and Damascus last month. On Dec. 23 ,there were multiple reports the Homs attack, and doctors belonging to Syrian American Medical Society (SAMS) subsequently corroborated the claims when they described a "probable" use of what chemical specialists refer to as Agent-15 (known as BZ to NATO). This is the first time the White House has confirmed their use. Here's the full letter the Obama administration sent to Sens. McCain and Levin:Letter from President Barack Obama to John McCain on Syria chemical weapons