It may be that for cultural reasons that Iran will not respond until sanctions are in place. Clearly, offering the open hand of dialog is not working. Threats, which make some feel good, are entirely counterproductive, as are displays of how big our equipment is. So make a deal with the Russians and Chinese and get the things in place. And be sure they include sanctions on US and Dubai companies that support the Iranian oil sector, including Halliburton. And if Fox News squeals because one of their friends gets sanctioned too, make them divest of one of their monopolies.
Jordan foreign minister says to speak with Kerry on Israel-Palestinian conflict (Reuters)
from the article: Clinton: We won't get a serious response from Iran without sanctions