US ‘not setting deadlines’ for Iran negotiations

It seems there was some tough talk from Israel about how far they (USA and Israel) are willing to go and how soon they will take action over Iran's nuclear weapon development.  Tough talk which the US is now attempting to back track from.  Secretary of State Hilary Clinton stated the following;

“We’re not setting deadlines. We’re watching very carefully about what they [Iran] do, because it’s always been more about their actions.” She added: “We’re convinced that we have more time to focus on these sanctions, to do everything we can to bring Iran to a good faith negotiation.”

How the Secretary Clinton can consider any talks resulting from heavy sanctions as "good faith" I have no idea, though I suppose it's better than nothing, right?