U.S. says facts point to Assad regime's use of chemical weapons

A review of facts related to the August 21 chemical weapons attack in Syria points to the regime of Bashar al-Assad being responsible for the incident, the U.S. State Department said on Tuesday.

Melanie Harf, the deputy spokesperson for the State Department, made the remarks on Tuesday during her daily press briefing. Harf said it was unlikely the Syrian opposition had anything to do with the attack, which killed hundreds of civilians.

"We believe that any careful review of the facts in this situation leads to the conclusion that the regime was, in fact, behind this horrific chemical weapons attack," Harf said. "It's undeniable that chemical weapons were used here on a large scale. We know that the regime maintains custody of those weapons and uses these types of rockets, and we also know that the opposition does not have those capabilities."

Harf said that President Barack Obama had yet to decide on a particular course of action in response to the August 21 attack. She reiterated that the U.S. is fully invested in a political solution to the Syrian crisis.

"I think that what happened on August 21 only underscores the need for a political solution, and we remain fully invested in a comprehensive and durable political solution to the crisis in Syria because we continue to believe that there is no military solution to this crisis," Harf said.