Secretary of State John Kerry is in Russia this week to push Russian leadership to take a tougher stance on Syria and Senator Bob Corker, R-Tenn., ranking member on the Senate Foreign Relations committee, said the U.S. will likely act soon to arm the Syrian opposition.

"I do think we'll be arming the opposition shortly," Corker said Tuesday on "CBS This Morning." "We're doing a lot more on the ground than really is known but we do have to change the equation. ... The moderate opposition groups we support are not as good at fighting, they're not as good at delivering humanitarian aid."