John Kerry actually said...

"this announcement is as convincing an answer to the efforts undertaken in Tehran, over the last few days, as any we could provide"

"This treaty improves our security because it increases certainty, stability, and transparency."

"The failure to ratify and move ahead with this will certainly set back the prospects for United States-Russian cooperation."

"every previous President who faced this choice has found that the United States is better off with a treaty than without one"