http://consortiumnews.com/2014/04/08/anti-iran-hardliners-seek-new-excuse/

Anti-Iran Hardliners Seek New Excuse

April 8, 2014

U.S. hardliners seeking to disrupt negotiations that would constrain – but not eliminate – Iran’s nuclear program are citing Iran’s efforts to evade U.S. oil sanctions as their latest excuse. But Iran has no obligation to submit to U.S. sanctions, notes ex-CIA analyst Paul R. Pillar.
By Paul R. Pillar
There exists, right now, a problem with one side’s obligations not being fulfilled as provided for under the preliminary agreement, known as the Joint Plan of Action, that Iran reached with the United States and its negotiating partners (the P5+1) last November. This lack of fulfillment endangers the process of negotiating a final agreement.
It is an understandable source of consternation to the other side, which will increasingly doubt the first side’s ability and willingness to make good on its commitments, including in any final deal. Hardliners on the second side will pounce on any non-fulfillment of the terms of the JPA as a reason to scuttle the whole process.