Iran nuclear deal hits milestone

THE nuclear deal between Iran and Western states has formally taken effect, but the US says it doesn't expect Iran to live up to its end for months.

THE US expects Iran will take months to live up to its end of a seven-nation nuclear pact that could eventually provide the country relief from international sanctions.

THE deal formally took effect on Sunday, opening the way for Iran to make major changes to an underground nuclear facility, a heavy water reactor and a site for enriching uranium. The changes will not happen immediately, and Iran must further constrain its nuclear program before relief from sanctions will occur.