As a result, Iranretaliatedbybreachingthetermsoftheaccordin a stepbystepresponse.
Lastmonth, itresumedenrichinguraniumto 20% a levelitachievedbeforetheaccord.
BidenhassaidthatifTehranreturnedtostrictcompliancewiththepact, Washingtonwouldfollowsuitandusethatas a springboardto a broaderagreementthatmightrestrictIran's missiledevelopmentinregionalactivities.