Kerry said that the U.S. is hoping for help from the Iranian government in their search for CIA agent Robert Levinson.
"We're looking for proof of life. We're working on several processes that I'm not free to talk about. But there are a number of different channels that are being worked aggressively," he said. "I think the Iranian government -- I can't tell you what happened or how the sequence was, but I think the Iranian government has the ability to help us here, and we hope they will."