John Kerry actually said...

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

"I believe our chances of proceeding to reductions on tac nukes would be zero if we do not ratify and put this treaty into force."

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

"A ratified New START Treaty would also continue our progress toward broader United States-Russian cooperation."