US official cites setbacks for Iran's nuke program
President Barack Obama's top nuclear adviser says that setbacks in Iran's uranium enrichment program have significantly delayed its progress toward building a nuclear weapon, AP reported.
The president's coordinator for weapons of mass destruction, Gary Samore, also said that the United States had made clear to Russia that delivering a promised advanced air defense system to Iran would have serious implications on U.S.-Russian relations.
Samore told reporters Tuesday that he would be surprised if Russia fulfilled Tehran's 2007 order for the S-300 air defense system.
Samore said that because of the setbacks in Iran's enrichment program, "the nuclear clock is not ticking as quickly as some had feared."