Democratic presidential candidate Hillary Clinton on Saturday praised the release of Americans held by Iran, but urged new sanctions on Tehran over its ballistic missile testing program, Reuters reported." I am greatly relieved by the safe return of American prisoners from Iran, " the former U. S. secretary of state said in a statement following announcements of a historic and multi - faceted deal between Iran and the United States.Recommended:Sanctions imposed on Iran over its nuclear program lifted She said if she were elected president in November, her approach to Iran would be "to distrust and verify." Clinton added: "Iran is still violating UN Security Council resolutions with its ballistic missile program, which should be met with new sanctions designations and firm resolve."