Report: US officials doubtful Iran sanction can work

British daily The Guardian reported on Friday that officials in key parts of the Obama administration are becoming increasingly convinced that sanctions cannot succeed in deterring Iran's nuclear aspirations and that the US will be forced to launch a military operation against Tehran or watch Israel do so.
"The White House wants to see sanctions work. This is not the Bush White House. It does not need another conflict...Its problem is that the guys in Tehran are behaving like sanctions don't matter, like their economy isn't collapsing, like Israel isn't going to do anything," The Guardian quoted an official familiar with Obama's Middle East policy as saying.
"Sanctions are all we've got to throw at the problem. If they fail then it's hard to see how we don't move to the 'in extremis' option," he added.