John Kerry actually said...

"this agreement gives us a chance to prevent an Iranian nuclear weapon through diplomacy and negotiations, rather than through war."

"A vote of disapproval in the absence of a credible alternative, would, after 10 years of effort, be self-defeating for our country."

"The overall effectiveness of the agreement will thus require the Obama administration and its successors to maintain a very tough inspections regime and to be ready to reimpose sanctions if Iran seeks..."

"On balance, however, I believe the nuclear deal will deliver more advantages than disadvantages to the United States."