The U.S. has high hopes for continuing to isolate Iran from the rest of the world, even though Iranian officials claim its nuclear program is for peaceful purposes.

FOX News Radio's Joy Piazza has more in our ongoing series on national security:

Securing America.

U.S. Officials claim it's all about unity.

National Security Advisor Tom Donilon tells a crowd at the Brookings Institute that the international community is rallying behind nuclear sanctions against Iran.

Donilon: "Iran is fundamentally weaker, more isolated, more vulnerable, and badly discredited than ever."

The International Atomic Energy Agency released a report a couple of weeks ago claiming Iran is using its nuclear technology to develop weapons.

Joy Piazza, FOX News Radio.

Editor's note: The U.S. has expanded its own sanctions against Iran.  They now include Iran's petrochemical industry and central bank.  China, Russia, and other developing nations who were against tougher penalties are meeting with American and European officials to iron out their differences.