U.S. ambassador to the United Nations Samantha Power expressed frustration on Friday with the UN Security Council for failing to condemn Syrian President Assad's use of chemical weapons.

"Of course, yes, we could if we would, if we could - we would if we could, but we can't," Power explained during a speech at the Center for American Progress on President Obama's case for military action in Syria.

Power explained that the United States has tried to work through the security council to condemn Assad, but that each time Russia and China blocked their attempts.

The U.N. Security Council, Power explained, was not living up to "promise or it's responsibilities" as the international enforcer of peace in the Syrian conflict.

"In short, the security council the world needs to deal with this urgent crisis, is not the security council we have," she concluded.