A senior U.S. official told the Wall Street Journal that the United States intends to prevent Iran from continuing uranium enrichment as part of talks on a future nuclear agreement between the countries. The official said "if Iran doesn't accept these terms, it won't be a good day for them." He added that there are disagreements with Israel regarding how to deal with Iran but noted that "our approach may change if Tehran doesn't want to reach an agreement." The report also stated that Israeli sources said military action against Iran could delay the nuclear program by at least a year.