Wendy Sherman actually said...

Our objective with Iran is for them not to have them and to lengthen the period of time for as long as possible that it will take them to ge...

We think that, as we sit here today, the right thing to do is to proceed with a multilateral effort to isolate the Central Bank of Iran.

clearly that is nobody's preferred course of action, but the President has said and has repeatedly said that all options remain on the table

Everything we do every day takes any timeframe you have seen in a published report and makes it longer.