Sanctions can work but it takes two to tango. The USA has also changed and post-Iraq is now open to reacting positively to Iranian gestures. This was not the case when G W Bush was President. It is not just changes within the Iran and election of Rouhani that explain the recent thawing of US/Iranian relations.
Australian Islamic State recruiter killed in U.S. airstrike in Iraq (Reuters)
from the article: When it comes to hypocrisy, Rohani is no challenge for Netanyahu
Washington wants to reduce its Sinai contingent by a third, fearing they may become targets of ISIS-linked terrorists.06:05 04.05.16 | 1 comments