Reif says this improved cooperation is expected to help the U.S.and Russia fight nuclear terrorism and work toward tougher sanctions on Iran for its nuclear activities.

VOA: standard.2010.04.04

We will pursue this effort of active containment unilaterally, maintaining the counter- terrorism sanctions and other measures enacted by previous administrations to encourage a change in Iranian behavior.

CENTERFORSECURITYPOLICY: Center for Security Policy | Excerpts from a Speech before the Near East Institute, 20 May 1993 by Martin S. Indyk, Special Assistant the President and Senior Director for Near East and South Asian Affairs

If he wants promised six-party benefits, with North Korea taken off America's list of state sponsors of terrorism, wider sanctions lifted, diplomatic relations restored and investments on the scale promised by South Korea and others starting to flow, he first has to come up with a credible account of all his past nuclear activities.

ECONOMIST: Time for North Korea to come clean about its nuclear past

Who happen to be under US and economic union sanctions for terrorism financing and for financing activities in support of weapons of mass destruction and ballistic missile programs in Iran.

CENTERFORSECURITYPOLICY: Shariah Compliant Finance and Financial Jihad