The United States hopes to reach an agreement with Iran on its nuclear program, otherwise, the liability for failure will fully lie on Iran, US Under Secretary of State Wendy Sherman said, according to RIA NOVOSTI.
"We hope the leaders in Tehran will agree to the steps necessary to assure the world that this program will be exclusively peaceful and thereby end Iran's economic and diplomatic isolation and improve further the lives of their people," he added while speaking at the Center for Strategic and International Studies in Washington.